D3 Sankey link 缩放问题
D3 Sankey link scaling issue
我需要绘制桑基图来显示关联。我已经使用 d3.scaleLinear() 缩放节点以赋予小节点意义，但是 links 没有根据节点缩放。我也尝试了 link 缩放，但它不起作用。
//node scale
var maxVal_node = d3.max(nodes.map(m => m.value));
var minVal_node = d3.min(nodes.map(m => m.value));
var nodeScale = d3.scaleLinear()
.domain([minVal_node, maxVal_node])
.range([10, 120]);
d3.sankey = function() {
var sankey = {},
nodeWidth = 24,
nodePadding = 8,
size = [1, 1],
nodes = [],
links = [];
sankey.nodeWidth = function(_) {
if (!arguments.length) return nodeWidth;
nodeWidth = +_;
return sankey;
};
sankey.nodePadding = function(_) {
if (!arguments.length) return nodePadding;
nodePadding = +_;
return sankey;
};
sankey.nodes = function(_) {
if (!arguments.length) return nodes;
nodes = _;
return sankey;
};
sankey.links = function(_) {
if (!arguments.length) return links;
links = _;
return sankey;
};
sankey.size = function(_) {
if (!arguments.length) return size;
size = _;
return sankey;
};
sankey.layout = function(iterations) {
computeNodeLinks();
computeNodeValues();
computeNodeBreadths();
computeNodeDepths(iterations);
computeLinkDepths();
return sankey;
};
sankey.relayout = function() {
computeLinkDepths();
return sankey;
};
sankey.link = function() {
var curvature = .5;
function link(d) {
var x0 = d.source.x + d.source.dx,
x1 = d.target.x,
xi = d3.interpolateNumber(x0, x1),
x2 = xi(curvature),
x3 = xi(1 - curvature),
y0 = d.source.y + d.sy + d.dy / 2,
y1 = d.target.y + d.ty + d.dy / 2;
return "M" + x0 + "," + y0 +
"C" + x2 + "," + y0 +
" " + x3 + "," + y1 +
" " + x1 + "," + y1;
}
link.curvature = function(_) {
if (!arguments.length) return curvature;
curvature = +_;
return link;
};
return link;
};
// Populate the sourceLinks and targetLinks for each node.
// Also, if the source and target are not objects, assume they are indices.
function computeNodeLinks() {
nodes.forEach(function(node) {
node.sourceLinks = [];
node.targetLinks = [];
});
links.forEach(function(link) {
var source = link.source,
target = link.target;
if (typeof source === "number") source = link.source = nodes[link.source];
if (typeof target === "number") target = link.target = nodes[link.target];
source.sourceLinks.push(link);
target.targetLinks.push(link);
});
}
// Compute the value (size) of each node by summing the associated links.
function computeNodeValues() {
nodes.forEach(function(node) {
node.value = Math.max(
d3.sum(node.sourceLinks, value),
d3.sum(node.targetLinks, value)
);
});
}
// Iteratively assign the breadth (x-position) for each node.
// Nodes are assigned the maximum breadth of incoming neighbors plus one;
// nodes with no incoming links are assigned breadth zero, while
// nodes with no outgoing links are assigned the maximum breadth.
function computeNodeBreadths() {
var remainingNodes = nodes,
nextNodes,
x = 0;
while (remainingNodes.length) {
nextNodes = [];
remainingNodes.forEach(function(node) {
node.x = x;
node.dx = nodeWidth;
node.sourceLinks.forEach(function(link) {
if (nextNodes.indexOf(link.target) < 0) {
nextNodes.push(link.target);
}
});
});
remainingNodes = nextNodes;
++x;
}
//
moveSinksRight(x);
scaleNodeBreadths((size[0] - nodeWidth) / (x - 1));
}
function moveSourcesRight() {
nodes.forEach(function(node) {
if (!node.targetLinks.length) {
node.x = d3.min(node.sourceLinks, function(d) {
return d.target.x;
}) - 1;
}
});
}
function moveSinksRight(x) {
nodes.forEach(function(node) {
if (!node.sourceLinks.length) {
node.x = x - 1;
}
});
}
function scaleNodeBreadths(kx) {
nodes.forEach(function(node) {
node.x *= kx;
});
}
function computeNodeDepths(iterations) {
var nodesByBreadth = d3.nest()
.key(function(d) {
return d.x;
})
.sortKeys(d3.ascending)
.entries(nodes)
.map(function(d) {
return d.values;
});
//
initializeNodeDepth();
resolveCollisions();
for (var alpha = 1; iterations > 0; --iterations) {
relaxRightToLeft(alpha *= .99);
resolveCollisions();
relaxLeftToRight(alpha);
resolveCollisions();
}
function initializeNodeDepth() {
var ky = d3.min(nodesByBreadth, function(nodes) {
return (size[1] - (nodes.length - 1) * nodePadding) / d3.sum(nodes, value);
});
nodesByBreadth.forEach(function(nodes) {
nodes.forEach(function(node, i) {
node.y = i;
node.dy = node.value * ky;
});
});
links.forEach(function(link) {
link.dy = link.value * ky;
});
}
function relaxLeftToRight(alpha) {
nodesByBreadth.forEach(function(nodes, breadth) {
nodes.forEach(function(node) {
if (node.targetLinks.length) {
var y = d3.sum(node.targetLinks, weightedSource) / d3.sum(node.targetLinks, value);
//node.y += (y - center(node)) * alpha;
}
});
});
function weightedSource(link) {
return center(link.source) * link.value;
}
}
function relaxRightToLeft(alpha) {
nodesByBreadth.slice().reverse().forEach(function(nodes) {
nodes.forEach(function(node) {
if (node.sourceLinks.length) {
var y = d3.sum(node.sourceLinks, weightedTarget) / d3.sum(node.sourceLinks, value);
//node.y += (y - center(node)) * alpha;
}
});
});
function weightedTarget(link) {
return center(link.target) * link.value;
}
}
function resolveCollisions() {
nodesByBreadth.forEach(function(nodes) {
var node,
dy,
y0 = 0,
n = nodes.length,
i;
// Push any overlapping nodes down.
nodes.sort(function(a, b) {
return a.value > b.value ? -1 : a.value < b.value ? 1 : 0;
});
for (i = 0; i < n; ++i) {
node = nodes[i];
dy = y0 - node.y;
if (dy > 0) node.y += dy;
y0 = node.y + node.dy + nodePadding;
}
// If the bottommost node goes outside the bounds, push it back up.
dy = y0 - nodePadding - size[1];
if (dy > 0) {
y0 = node.y -= dy;
// Push any overlapping nodes back up.
for (i = n - 2; i >= 0; --i) {
node = nodes[i];
dy = node.y + node.dy + nodePadding - y0;
if (dy > 0) node.y -= dy;
y0 = node.y;
}
}
});
}
function ascendingDepth(a, b) {
return a.y - b.y;
}
}
function computeLinkDepths() {
nodes.forEach(function(node) {
node.sourceLinks.sort(ascendingTargetDepth);
node.targetLinks.sort(ascendingSourceDepth);
});
nodes.forEach(function(node) {
var sy = 0,
ty = 0;
node.sourceLinks.forEach(function(link) {
link.sy = sy;
sy += link.dy;
});
node.targetLinks.forEach(function(link) {
link.ty = ty;
ty += link.dy;
});
});
function ascendingSourceDepth(a, b) {
return a.source.y - b.source.y;
}
function ascendingTargetDepth(a, b) {
return a.target.y - b.target.y;
}
}
function center(node) {
return node.y + node.dy / 2;
}
function value(link) {
return link.value;
}
return sankey;
};
/* ------------------- our code ------------------------ */
var units = "Widgets";
var linkData = [{
"source": 7,
"target": 6,
"productIdx": "8350",
"qty": 27200,
"mv": 3054016,
"matrixCost": 300,
"sourceNodeName": "G",
"targetNodeName": "L",
"value": 27200
}, {
"source": 7,
"target": 11,
"productIdx": "8350",
"qty": 196599,
"mv": 22074135.72,
"matrixCost": 5000,
"sourceNodeName": "G",
"targetNodeName": "K",
"value": 196599
}, {
"source": 9,
"target": 11,
"productIdx": "8350",
"qty": 113401,
"mv": 12732664.28,
"matrixCost": 5020,
"sourceNodeName": "I",
"targetNodeName": "K",
"value": 113401
}, {
"source": 2,
"target": 10,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 100015,
"sourceNodeName": "C",
"targetNodeName": "J",
"value": 0
}, {
"source": 0,
"target": 10,
"productIdx": "8350",
"qty": 2500000,
"mv": 280700000,
"matrixCost": 100033,
"sourceNodeName": "A",
"targetNodeName": "J",
"value": 2500000
}, {
"source": 9,
"target": 5,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "I",
"targetNodeName": "F",
"value": 0
}, {
"source": 9,
"target": 3,
"productIdx": "8350",
"qty": 1309599,
"mv": 147041775.72,
"matrixCost": 240048,
"sourceNodeName": "I",
"targetNodeName": "D",
"value": 1309599
}, {
"source": 0,
"target": 5,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "A",
"targetNodeName": "F",
"value": 0
}, {
"source": 2,
"target": 5,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "C",
"targetNodeName": "F",
"value": 0
}, {
"source": 2,
"target": 3,
"productIdx": "8350",
"qty": 3250408,
"mv": 364955810.24,
"matrixCost": 240048,
"sourceNodeName": "C",
"targetNodeName": "D",
"value": 3250408
}, {
"source": 8,
"target": 1,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "H",
"targetNodeName": "B",
"value": 0
}, {
"source": 4,
"target": 1,
"productIdx": "8350",
"qty": 10,
"mv": 1122.8,
"matrixCost": 240048,
"sourceNodeName": "E",
"targetNodeName": "B",
"value": 10
}]
var nodes = [{
"nodeId": 0,
"nodeName": "A",
"entityCd": "16G"
}, {
"nodeId": 1,
"nodeName": "B",
"entityCd": "161"
}, {
"nodeId": 2,
"nodeName": "C",
"entityCd": "16G"
}, {
"nodeId": 3,
"nodeName": "D",
"entityCd": "XX"
}, {
"nodeId": 4,
"nodeName": "E",
"entityCd": "XX"
}, {
"nodeId": 5,
"nodeName": "F",
"entityCd": "XX"
}, {
"nodeId": 6,
"nodeName": "L",
"entityCd": "16G",
"bucketCd": "LoantoCoverDublinPBCustShort",
"bucketName": "Loan to Cover Dublin PB Cust Short",
"bucketType": "U"
}, {
"nodeId": 7,
"nodeName": "G",
"entityCd": "16G"
}, {
"nodeId": 8,
"nodeName": "H",
"entityCd": "XX"
}, {
"nodeId": 9,
"nodeName": "I",
"entityCd": "16G"
}, {
"nodeId": 10,
"nodeName": "J",
"entityCd": "16G"
}, {
"nodeId": 11,
"nodeName": "K",
"entityCd": "16G"
}]
var formatNumber = d3.format(",.0f"), // zero decimal places
format = function(d) {
return formatNumber(d)
};
// append the svg object to the body of the page
var svg = d3.select("#" + "chart"),
width = +svg.attr("width"),
height = +svg.attr("height");
var sankey = d3.sankey()
.nodeWidth(10)
.nodePadding(10)
.size([width - 1, height - 6]);
var path = sankey.link();
d3.selectAll('.tooltip-sankey').style("visibility", "hidden");
var tooltip = d3.select("body")
.append("div")
.attr("class", "tooltip-sankey")
.style("position", "absolute")
.style("z-index", "10")
.style("visibility", "hidden");
// load the data
sankey
.nodes(nodes)
.links(linkData)
.layout(32);
//node scale
var maxVal_node = d3.max(nodes.map(m => m.value));
var minVal_node = d3.min(nodes.map(m => m.value));
var nodeScale = d3.scaleLinear().domain([minVal_node, maxVal_node])
.range([10, 120]);
// add in the links
var link = svg.append("g").selectAll(".link")
.data(linkData)
.enter().append("path")
.attr("class", "link-sankey")
.attr("d", path)
.style('stroke', function(d) {
return d.color;
}).style("stroke-width", function(d) {
return Math.max(1, d.dy)
})
.sort(function(a, b) {
return b.dy - a.dy;
})
.on("mouseover", function(d) {
var sourceId, targetId;
for (var item in d.source.sourceLinks)
if (d.value === d.source.sourceLinks[item].value) sourceId = item;
for (var item in d.target.targetLinks)
if (d.value === d.target.targetLinks[item].value) targetId = item;
var source = d3.select("#inner-rect-" + d.source.id + "-" + sourceId);
var target = d3.select("#inner-rect-" + d.target.id + "-" + targetId);
source.style("stroke-opacity", 1).style("fill", "#1f77b4");
target.style("stroke-opacity", 1).style("fill", "#1f77b4");
//update text - one line
var sourceText = d3.select("#text-" + d.source.id);
sourceText.text(d.source.nodeName + ' : ' + d.value);
var targetText = d3.select("#text-" + d.target.id);
targetText.text(d.target.nodeName + ' : ' + d.value);
tooltip.html("Source: <b>" + d.source.nodeName + "</b><br/>Target: <b>" + d.target.nodeName + "</b><br/>Identifier: <b>" + +"</b>" + "</b><br/>Qty: <b>" + format(d.value) + "</b>" + "</b><br/>Mv($): <b>" + format(d.mv) + "</b>");
return tooltip.style("visibility", "visible");
})
.on("mousemove", function() {
var tooltipWidth = parseInt(tooltip.style("width"));
if (window.innerWidth - d3.event.pageX < tooltipWidth) return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX - tooltipWidth) + "px");
return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX + 10) + "px");
})
.on("mouseout", function(d) {
var sourceId, targetId;
for (var item in d.source.sourceLinks)
if (d.value === d.source.sourceLinks[item].value) sourceId = item;
for (var item in d.target.targetLinks)
if (d.value === d.target.targetLinks[item].value) targetId = item;
//update text - one line
var sourceText = d3.select("#text-" + d.source.id);
sourceText.text(d.source.nodeName + ' : ' + d.source.value);
var targetText = d3.select("#text-" + d.target.id);
targetText.text(d.target.nodeName + ' : ' + d.target.value);
return tooltip.style("visibility", "hidden");
});
// add in the nodes
var node = svg.append("g").selectAll(".node")
.data(nodes)
.enter().append("g")
.on("click", showConnections)
.on("mouseover", function(d) {
if (d.totalPledge == 0 || d.totalBorrow == 0) {
tooltip.html("Name: <b>" + d.nodeName + "</b><br/>Total Qty: <b>" + format(d.value) + "</b>");
} else {
tooltip.html("Name: <b>" + d.nodeName + "</b><br/>Total Qty: <b>" + format(d.value) + "</b>");
}
return tooltip.style("visibility", "visible");
})
.on("mousemove", function() {
var tooltipWidth = parseInt(tooltip.style("width"));
if (window.innerWidth - d3.event.pageX < tooltipWidth) return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX - tooltipWidth) + "px");
return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX + 10) + "px");
})
.on("mouseout", function() {
return tooltip.style("visibility", "hidden");
})
.attr("class", "node")
.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")";
})
.on("click", showConnections);
// add the rectangles for the nodes
node.append("rect")
.attr("height", function(d) {
return nodeScale(d.value);
})
.attr("width", sankey.nodeWidth())
.style("fill", function() {
return "#605f66"
})
.style("stroke", function(d) {
return d3.rgb(d.color).darker(2);
})
.on("click", showConnections)
// add in the title for the nodes
node.append("text")
.attr("x", -6)
.attr("y", function(d) {
return nodeScale(d.value) / 2
})
.attr("dy", ".15em")
.attr("text-anchor", "end")
//.style("font-size", "10px")
.attr("transform", null)
.attr("class", "nodeText")
.text(function(d) {
return d.nodeName;
})
.filter(function(d) {
return d.x < width / 2;
})
.attr("x", 6 + sankey.nodeWidth())
.attr("text-anchor", "start");
function showConnections(d) {
if (!d3.select(this).classed("selected")) {
d3.select(this).classed("selected", true);
d3.select(this).style("stroke", "black")
.style("stroke-opacity", 0.2);
//If this link is connected to the node
link.style("stroke-opacity", function(l) {
if (l.source.nodeName == d.nodeName || l.target.nodeName == d.nodeName) {
return 0.6;
} else
return 0.2;
});
} else {
d3.select(this).classed("selected", false);
d3.select(this).style("stroke", "black")
.style("stroke-opacity", 0.2)
link.style("stroke-opacity", function() {
return 0.2;
});
}
}
.node rect {
cursor: move;
}
.link {
fill: none;
stroke: #000;
stroke-opacity: .2;
}
.link:hover {
stroke-opacity: .5;
}
* {
font: 11px sans-serif;
}
.linkLabel {
z-index: 10;
}
svg line.links {
stroke: #999999;
stroke-opacity: 0.6;
stroke-width: 1px;
}
.link-sankey {
fill: none;
stroke: #1f77b4;
stroke-opacity: .2;
}
.link-sankey:hover {
stroke-opacity: .5 !important;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.13.0/d3.min.js"></script>
<svg width="550" height="400" id="chart"></svg>
此外，小节点有点重叠，中间没有任何空格。
提前致谢。
看来您一直在混淆 d3 的不同部分，而没有仔细阅读 d3-sankey 的文档。它已经内置了所有内容，可以根据节点的价值扩展节点。 d3.scaleLinear 适用于沿轴的图表，而 sankey 是一种完全不同的野兽。
根据您提供的代码（在 --- our code --- 之前），我发现每个节点都有一个属性 dx 表示宽度，dy 表示高度。使用它们彻底解决了问题。
编辑：我通过转换每个 link 的值更新了答案。通过使用 Math.sqrt() 并添加一个 baseWidth，我赋予了较小的数量比较大的数量更多的力量。这意味着 link 的宽度将不再是 直接 读取其值，但由于它仍然大于比例，所以这无关紧要。请注意，现在即使是最小的节点也有一些宽度。
d3.sankey = function() {
var sankey = {},
nodeWidth = 24,
nodePadding = 8,
size = [1, 1],
nodes = [],
links = [];
sankey.nodeWidth = function(_) {
if (!arguments.length) return nodeWidth;
nodeWidth = +_;
return sankey;
};
sankey.nodePadding = function(_) {
if (!arguments.length) return nodePadding;
nodePadding = +_;
return sankey;
};
sankey.nodes = function(_) {
if (!arguments.length) return nodes;
nodes = _;
return sankey;
};
sankey.links = function(_) {
if (!arguments.length) return links;
links = _;
return sankey;
};
sankey.size = function(_) {
if (!arguments.length) return size;
size = _;
return sankey;
};
sankey.layout = function(iterations) {
computeNodeLinks();
computeNodeValues();
computeNodeBreadths();
computeNodeDepths(iterations);
computeLinkDepths();
return sankey;
};
sankey.relayout = function() {
computeLinkDepths();
return sankey;
};
sankey.link = function() {
var curvature = .5;
function link(d) {
var x0 = d.source.x + d.source.dx,
x1 = d.target.x,
xi = d3.interpolateNumber(x0, x1),
x2 = xi(curvature),
x3 = xi(1 - curvature),
y0 = d.source.y + d.sy + d.dy / 2,
y1 = d.target.y + d.ty + d.dy / 2;
return "M" + x0 + "," + y0 +
"C" + x2 + "," + y0 +
" " + x3 + "," + y1 +
" " + x1 + "," + y1;
}
link.curvature = function(_) {
if (!arguments.length) return curvature;
curvature = +_;
return link;
};
return link;
};
// Populate the sourceLinks and targetLinks for each node.
// Also, if the source and target are not objects, assume they are indices.
function computeNodeLinks() {
nodes.forEach(function(node) {
node.sourceLinks = [];
node.targetLinks = [];
});
links.forEach(function(link) {
var source = link.source,
target = link.target;
if (typeof source === "number") source = link.source = nodes[link.source];
if (typeof target === "number") target = link.target = nodes[link.target];
source.sourceLinks.push(link);
target.targetLinks.push(link);
});
}
// Compute the value (size) of each node by summing the associated links.
function computeNodeValues() {
nodes.forEach(function(node) {
node.value = Math.max(
d3.sum(node.sourceLinks, value),
d3.sum(node.targetLinks, value)
);
});
}
// Iteratively assign the breadth (x-position) for each node.
// Nodes are assigned the maximum breadth of incoming neighbors plus one;
// nodes with no incoming links are assigned breadth zero, while
// nodes with no outgoing links are assigned the maximum breadth.
function computeNodeBreadths() {
var remainingNodes = nodes,
nextNodes,
x = 0;
while (remainingNodes.length) {
nextNodes = [];
remainingNodes.forEach(function(node) {
node.x = x;
node.dx = nodeWidth;
node.sourceLinks.forEach(function(link) {
if (nextNodes.indexOf(link.target) < 0) {
nextNodes.push(link.target);
}
});
});
remainingNodes = nextNodes;
++x;
}
//
moveSinksRight(x);
scaleNodeBreadths((size[0] - nodeWidth) / (x - 1));
}
function moveSourcesRight() {
nodes.forEach(function(node) {
if (!node.targetLinks.length) {
node.x = d3.min(node.sourceLinks, function(d) {
return d.target.x;
}) - 1;
}
});
}
function moveSinksRight(x) {
nodes.forEach(function(node) {
if (!node.sourceLinks.length) {
node.x = x - 1;
}
});
}
function scaleNodeBreadths(kx) {
nodes.forEach(function(node) {
node.x *= kx;
});
}
function computeNodeDepths(iterations) {
var nodesByBreadth = d3.nest()
.key(function(d) {
return d.x;
})
.sortKeys(d3.ascending)
.entries(nodes)
.map(function(d) {
return d.values;
});
//
initializeNodeDepth();
resolveCollisions();
for (var alpha = 1; iterations > 0; --iterations) {
relaxRightToLeft(alpha *= .99);
resolveCollisions();
relaxLeftToRight(alpha);
resolveCollisions();
}
function initializeNodeDepth() {
var ky = d3.min(nodesByBreadth, function(nodes) {
return (size[1] - (nodes.length - 1) * nodePadding) / d3.sum(nodes, value);
});
nodesByBreadth.forEach(function(nodes) {
nodes.forEach(function(node, i) {
node.y = i;
node.dy = node.value * ky;
});
});
links.forEach(function(link) {
link.dy = link.value * ky;
});
}
function relaxLeftToRight(alpha) {
nodesByBreadth.forEach(function(nodes, breadth) {
nodes.forEach(function(node) {
if (node.targetLinks.length) {
var y = d3.sum(node.targetLinks, weightedSource) / d3.sum(node.targetLinks, value);
//node.y += (y - center(node)) * alpha;
}
});
});
function weightedSource(link) {
return center(link.source) * link.value;
}
}
function relaxRightToLeft(alpha) {
nodesByBreadth.slice().reverse().forEach(function(nodes) {
nodes.forEach(function(node) {
if (node.sourceLinks.length) {
var y = d3.sum(node.sourceLinks, weightedTarget) / d3.sum(node.sourceLinks, value);
//node.y += (y - center(node)) * alpha;
}
});
});
function weightedTarget(link) {
return center(link.target) * link.value;
}
}
function resolveCollisions() {
nodesByBreadth.forEach(function(nodes) {
var node,
dy,
y0 = 0,
n = nodes.length,
i;
// Push any overlapping nodes down.
nodes.sort(function(a, b) {
return a.value > b.value ? -1 : a.value < b.value ? 1 : 0;
});
for (i = 0; i < n; ++i) {
node = nodes[i];
dy = y0 - node.y;
if (dy > 0) node.y += dy;
y0 = node.y + node.dy + nodePadding;
}
// If the bottommost node goes outside the bounds, push it back up.
dy = y0 - nodePadding - size[1];
if (dy > 0) {
y0 = node.y -= dy;
// Push any overlapping nodes back up.
for (i = n - 2; i >= 0; --i) {
node = nodes[i];
dy = node.y + node.dy + nodePadding - y0;
if (dy > 0) node.y -= dy;
y0 = node.y;
}
}
});
}
function ascendingDepth(a, b) {
return a.y - b.y;
}
}
function computeLinkDepths() {
nodes.forEach(function(node) {
node.sourceLinks.sort(ascendingTargetDepth);
node.targetLinks.sort(ascendingSourceDepth);
});
nodes.forEach(function(node) {
var sy = 0,
ty = 0;
node.sourceLinks.forEach(function(link) {
link.sy = sy;
sy += link.dy;
});
node.targetLinks.forEach(function(link) {
link.ty = ty;
ty += link.dy;
});
});
function ascendingSourceDepth(a, b) {
return a.source.y - b.source.y;
}
function ascendingTargetDepth(a, b) {
return a.target.y - b.target.y;
}
}
function center(node) {
return node.y + node.dy / 2;
}
function value(link) {
return link.value;
}
return sankey;
};
/* ------------------- our code ------------------------ */
var units = "Widgets";
var linkData = [{
"source": 7,
"target": 6,
"productIdx": "8350",
"qty": 27200,
"mv": 3054016,
"matrixCost": 300,
"sourceNodeName": "G",
"targetNodeName": "L",
"value": 27200
}, {
"source": 7,
"target": 11,
"productIdx": "8350",
"qty": 196599,
"mv": 22074135.72,
"matrixCost": 5000,
"sourceNodeName": "G",
"targetNodeName": "K",
"value": 196599
}, {
"source": 9,
"target": 11,
"productIdx": "8350",
"qty": 113401,
"mv": 12732664.28,
"matrixCost": 5020,
"sourceNodeName": "I",
"targetNodeName": "K",
"value": 113401
}, {
"source": 2,
"target": 10,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 100015,
"sourceNodeName": "C",
"targetNodeName": "J",
"value": 0
}, {
"source": 0,
"target": 10,
"productIdx": "8350",
"qty": 2500000,
"mv": 280700000,
"matrixCost": 100033,
"sourceNodeName": "A",
"targetNodeName": "J",
"value": 2500000
}, {
"source": 9,
"target": 5,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "I",
"targetNodeName": "F",
"value": 0
}, {
"source": 9,
"target": 3,
"productIdx": "8350",
"qty": 1309599,
"mv": 147041775.72,
"matrixCost": 240048,
"sourceNodeName": "I",
"targetNodeName": "D",
"value": 1309599
}, {
"source": 0,
"target": 5,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "A",
"targetNodeName": "F",
"value": 0
}, {
"source": 2,
"target": 5,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "C",
"targetNodeName": "F",
"value": 0
}, {
"source": 2,
"target": 3,
"productIdx": "8350",
"qty": 3250408,
"mv": 364955810.24,
"matrixCost": 240048,
"sourceNodeName": "C",
"targetNodeName": "D",
"value": 3250408
}, {
"source": 8,
"target": 1,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "H",
"targetNodeName": "B",
"value": 0
}, {
"source": 4,
"target": 1,
"productIdx": "8350",
"qty": 10,
"mv": 1122.8,
"matrixCost": 240048,
"sourceNodeName": "E",
"targetNodeName": "B",
"value": 10
}]
var nodes = [{
"nodeId": 0,
"nodeName": "A",
"entityCd": "16G"
}, {
"nodeId": 1,
"nodeName": "B",
"entityCd": "161"
}, {
"nodeId": 2,
"nodeName": "C",
"entityCd": "16G"
}, {
"nodeId": 3,
"nodeName": "D",
"entityCd": "XX"
}, {
"nodeId": 4,
"nodeName": "E",
"entityCd": "XX"
}, {
"nodeId": 5,
"nodeName": "F",
"entityCd": "XX"
}, {
"nodeId": 6,
"nodeName": "L",
"entityCd": "16G",
"bucketCd": "LoantoCoverDublinPBCustShort",
"bucketName": "Loan to Cover Dublin PB Cust Short",
"bucketType": "U"
}, {
"nodeId": 7,
"nodeName": "G",
"entityCd": "16G"
}, {
"nodeId": 8,
"nodeName": "H",
"entityCd": "XX"
}, {
"nodeId": 9,
"nodeName": "I",
"entityCd": "16G"
}, {
"nodeId": 10,
"nodeName": "J",
"entityCd": "16G"
}, {
"nodeId": 11,
"nodeName": "K",
"entityCd": "16G"
}]
var formatNumber = d3.format(",.0f"), // zero decimal places
format = function(d) {
return formatNumber(d)
};
// append the svg object to the body of the page
var svg = d3.select("#" + "chart"),
width = +svg.attr("width"),
height = +svg.attr("height");
var sankey = d3.sankey()
.nodeWidth(10)
.nodePadding(10)
.size([width - 1, height - 6]);
var path = sankey.link();
d3.selectAll('.tooltip-sankey').style("visibility", "hidden");
var tooltip = d3.select("body")
.append("div")
.attr("class", "tooltip-sankey")
.style("position", "absolute")
.style("z-index", "10")
.style("visibility", "hidden");
// Transform the data so even nodes with small links always have something to show for it.
var baseWeight = 50
linkData.forEach(function(link) {
link.value = baseWeight + Math.sqrt(link.qty);
});
// load the data
sankey
.nodes(nodes)
.links(linkData)
.layout(32);
// add in the links
var link = svg.append("g").selectAll(".link")
.data(linkData)
.enter().append("path")
.attr("class", "link-sankey")
.attr("d", path)
.style('stroke', function(d) {
return d.color;
}).style("stroke-width", function(d) {
return Math.max(1, d.dy)
})
.sort(function(a, b) {
return b.dy - a.dy;
})
.on("mouseover", function(d) {
var sourceId, targetId;
for (var item in d.source.sourceLinks)
if (d.value === d.source.sourceLinks[item].value) sourceId = item;
for (var item in d.target.targetLinks)
if (d.value === d.target.targetLinks[item].value) targetId = item;
var source = d3.select("#inner-rect-" + d.source.id + "-" + sourceId);
var target = d3.select("#inner-rect-" + d.target.id + "-" + targetId);
source.style("stroke-opacity", 1).style("fill", "#1f77b4");
target.style("stroke-opacity", 1).style("fill", "#1f77b4");
//update text - one line
var sourceText = d3.select("#text-" + d.source.id);
sourceText.text(d.source.nodeName + ' : ' + d.value);
var targetText = d3.select("#text-" + d.target.id);
targetText.text(d.target.nodeName + ' : ' + d.value);
tooltip.html("Source: <b>" + d.source.nodeName + "</b><br/>Target: <b>" + d.target.nodeName + "</b><br/>Identifier: <b>" + +"</b>" + "</b><br/>Qty: <b>" + format(d.value) + "</b>" + "</b><br/>Mv($): <b>" + format(d.mv) + "</b>");
return tooltip.style("visibility", "visible");
})
.on("mousemove", function() {
var tooltipWidth = parseInt(tooltip.style("width"));
if (window.innerWidth - d3.event.pageX < tooltipWidth) return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX - tooltipWidth) + "px");
return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX + 10) + "px");
})
.on("mouseout", function(d) {
var sourceId, targetId;
for (var item in d.source.sourceLinks)
if (d.value === d.source.sourceLinks[item].value) sourceId = item;
for (var item in d.target.targetLinks)
if (d.value === d.target.targetLinks[item].value) targetId = item;
//update text - one line
var sourceText = d3.select("#text-" + d.source.id);
sourceText.text(d.source.nodeName + ' : ' + d.source.value);
var targetText = d3.select("#text-" + d.target.id);
targetText.text(d.target.nodeName + ' : ' + d.target.value);
return tooltip.style("visibility", "hidden");
});
// add in the nodes
var node = svg.append("g").selectAll(".node")
.data(nodes)
.enter().append("g")
.on("click", showConnections)
.on("mouseover", function(d) {
if (d.totalPledge == 0 || d.totalBorrow == 0) {
tooltip.html("Name: <b>" + d.nodeName + "</b><br/>Total Qty: <b>" + format(d.value) + "</b>");
} else {
tooltip.html("Name: <b>" + d.nodeName + "</b><br/>Total Qty: <b>" + format(d.value) + "</b>");
}
return tooltip.style("visibility", "visible");
})
.on("mousemove", function() {
var tooltipWidth = parseInt(tooltip.style("width"));
if (window.innerWidth - d3.event.pageX < tooltipWidth) return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX - tooltipWidth) + "px");
return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX + 10) + "px");
})
.on("mouseout", function() {
return tooltip.style("visibility", "hidden");
})
.attr("class", "node")
.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")";
})
.on("click", showConnections);
// add the rectangles for the nodes
node.append("rect")
.attr("height", function(d) { return d.dy; })
.attr("width", function(d) { return d.dx; })
.style("fill", "#605f66")
.style("stroke", function(d) {
return d3.rgb(d.color).darker(2);
})
.on("click", showConnections)
// add in the title for the nodes
node.append("text")
.attr("x", -6)
.attr("y", function(d) { return d.dy / 2; })
.attr("dy", ".15em")
.attr("text-anchor", "end")
//.style("font-size", "10px")
.attr("transform", null)
.attr("class", "nodeText")
.text(function(d) {
return d.nodeName;
})
.filter(function(d) {
return d.x < width / 2;
})
.attr("x", 6 + sankey.nodeWidth())
.attr("text-anchor", "start");
function showConnections(d) {
if (!d3.select(this).classed("selected")) {
d3.select(this).classed("selected", true);
d3.select(this).style("stroke", "black")
.style("stroke-opacity", 0.2);
//If this link is connected to the node
link.style("stroke-opacity", function(l) {
if (l.source.nodeName == d.nodeName || l.target.nodeName == d.nodeName) {
return 0.6;
} else
return 0.2;
});
} else {
d3.select(this).classed("selected", false);
d3.select(this).style("stroke", "black")
.style("stroke-opacity", 0.2)
link.style("stroke-opacity", function() {
return 0.2;
});
}
}
.node rect {
cursor: move;
}
.link {
fill: none;
stroke: #000;
stroke-opacity: .2;
}
.link:hover {
stroke-opacity: .5;
}
* {
font: 11px sans-serif;
}
.linkLabel {
z-index: 10;
}
svg line.links {
stroke: #999999;
stroke-opacity: 0.6;
stroke-width: 1px;
}
.link-sankey {
fill: none;
stroke: #1f77b4;
stroke-opacity: .2;
}
.link-sankey:hover {
stroke-opacity: .5 !important;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.13.0/d3.min.js"></script>
<svg width="550" height="400" id="chart"></svg>
我需要绘制桑基图来显示关联。我已经使用 d3.scaleLinear() 缩放节点以赋予小节点意义，但是 links 没有根据节点缩放。我也尝试了 link 缩放，但它不起作用。
//node scale
var maxVal_node = d3.max(nodes.map(m => m.value));
var minVal_node = d3.min(nodes.map(m => m.value));
var nodeScale = d3.scaleLinear()
.domain([minVal_node, maxVal_node])
.range([10, 120]);
d3.sankey = function() {
var sankey = {},
nodeWidth = 24,
nodePadding = 8,
size = [1, 1],
nodes = [],
links = [];
sankey.nodeWidth = function(_) {
if (!arguments.length) return nodeWidth;
nodeWidth = +_;
return sankey;
};
sankey.nodePadding = function(_) {
if (!arguments.length) return nodePadding;
nodePadding = +_;
return sankey;
};
sankey.nodes = function(_) {
if (!arguments.length) return nodes;
nodes = _;
return sankey;
};
sankey.links = function(_) {
if (!arguments.length) return links;
links = _;
return sankey;
};
sankey.size = function(_) {
if (!arguments.length) return size;
size = _;
return sankey;
};
sankey.layout = function(iterations) {
computeNodeLinks();
computeNodeValues();
computeNodeBreadths();
computeNodeDepths(iterations);
computeLinkDepths();
return sankey;
};
sankey.relayout = function() {
computeLinkDepths();
return sankey;
};
sankey.link = function() {
var curvature = .5;
function link(d) {
var x0 = d.source.x + d.source.dx,
x1 = d.target.x,
xi = d3.interpolateNumber(x0, x1),
x2 = xi(curvature),
x3 = xi(1 - curvature),
y0 = d.source.y + d.sy + d.dy / 2,
y1 = d.target.y + d.ty + d.dy / 2;
return "M" + x0 + "," + y0 +
"C" + x2 + "," + y0 +
" " + x3 + "," + y1 +
" " + x1 + "," + y1;
}
link.curvature = function(_) {
if (!arguments.length) return curvature;
curvature = +_;
return link;
};
return link;
};
// Populate the sourceLinks and targetLinks for each node.
// Also, if the source and target are not objects, assume they are indices.
function computeNodeLinks() {
nodes.forEach(function(node) {
node.sourceLinks = [];
node.targetLinks = [];
});
links.forEach(function(link) {
var source = link.source,
target = link.target;
if (typeof source === "number") source = link.source = nodes[link.source];
if (typeof target === "number") target = link.target = nodes[link.target];
source.sourceLinks.push(link);
target.targetLinks.push(link);
});
}
// Compute the value (size) of each node by summing the associated links.
function computeNodeValues() {
nodes.forEach(function(node) {
node.value = Math.max(
d3.sum(node.sourceLinks, value),
d3.sum(node.targetLinks, value)
);
});
}
// Iteratively assign the breadth (x-position) for each node.
// Nodes are assigned the maximum breadth of incoming neighbors plus one;
// nodes with no incoming links are assigned breadth zero, while
// nodes with no outgoing links are assigned the maximum breadth.
function computeNodeBreadths() {
var remainingNodes = nodes,
nextNodes,
x = 0;
while (remainingNodes.length) {
nextNodes = [];
remainingNodes.forEach(function(node) {
node.x = x;
node.dx = nodeWidth;
node.sourceLinks.forEach(function(link) {
if (nextNodes.indexOf(link.target) < 0) {
nextNodes.push(link.target);
}
});
});
remainingNodes = nextNodes;
++x;
}
//
moveSinksRight(x);
scaleNodeBreadths((size[0] - nodeWidth) / (x - 1));
}
function moveSourcesRight() {
nodes.forEach(function(node) {
if (!node.targetLinks.length) {
node.x = d3.min(node.sourceLinks, function(d) {
return d.target.x;
}) - 1;
}
});
}
function moveSinksRight(x) {
nodes.forEach(function(node) {
if (!node.sourceLinks.length) {
node.x = x - 1;
}
});
}
function scaleNodeBreadths(kx) {
nodes.forEach(function(node) {
node.x *= kx;
});
}
function computeNodeDepths(iterations) {
var nodesByBreadth = d3.nest()
.key(function(d) {
return d.x;
})
.sortKeys(d3.ascending)
.entries(nodes)
.map(function(d) {
return d.values;
});
//
initializeNodeDepth();
resolveCollisions();
for (var alpha = 1; iterations > 0; --iterations) {
relaxRightToLeft(alpha *= .99);
resolveCollisions();
relaxLeftToRight(alpha);
resolveCollisions();
}
function initializeNodeDepth() {
var ky = d3.min(nodesByBreadth, function(nodes) {
return (size[1] - (nodes.length - 1) * nodePadding) / d3.sum(nodes, value);
});
nodesByBreadth.forEach(function(nodes) {
nodes.forEach(function(node, i) {
node.y = i;
node.dy = node.value * ky;
});
});
links.forEach(function(link) {
link.dy = link.value * ky;
});
}
function relaxLeftToRight(alpha) {
nodesByBreadth.forEach(function(nodes, breadth) {
nodes.forEach(function(node) {
if (node.targetLinks.length) {
var y = d3.sum(node.targetLinks, weightedSource) / d3.sum(node.targetLinks, value);
//node.y += (y - center(node)) * alpha;
}
});
});
function weightedSource(link) {
return center(link.source) * link.value;
}
}
function relaxRightToLeft(alpha) {
nodesByBreadth.slice().reverse().forEach(function(nodes) {
nodes.forEach(function(node) {
if (node.sourceLinks.length) {
var y = d3.sum(node.sourceLinks, weightedTarget) / d3.sum(node.sourceLinks, value);
//node.y += (y - center(node)) * alpha;
}
});
});
function weightedTarget(link) {
return center(link.target) * link.value;
}
}
function resolveCollisions() {
nodesByBreadth.forEach(function(nodes) {
var node,
dy,
y0 = 0,
n = nodes.length,
i;
// Push any overlapping nodes down.
nodes.sort(function(a, b) {
return a.value > b.value ? -1 : a.value < b.value ? 1 : 0;
});
for (i = 0; i < n; ++i) {
node = nodes[i];
dy = y0 - node.y;
if (dy > 0) node.y += dy;
y0 = node.y + node.dy + nodePadding;
}
// If the bottommost node goes outside the bounds, push it back up.
dy = y0 - nodePadding - size[1];
if (dy > 0) {
y0 = node.y -= dy;
// Push any overlapping nodes back up.
for (i = n - 2; i >= 0; --i) {
node = nodes[i];
dy = node.y + node.dy + nodePadding - y0;
if (dy > 0) node.y -= dy;
y0 = node.y;
}
}
});
}
function ascendingDepth(a, b) {
return a.y - b.y;
}
}
function computeLinkDepths() {
nodes.forEach(function(node) {
node.sourceLinks.sort(ascendingTargetDepth);
node.targetLinks.sort(ascendingSourceDepth);
});
nodes.forEach(function(node) {
var sy = 0,
ty = 0;
node.sourceLinks.forEach(function(link) {
link.sy = sy;
sy += link.dy;
});
node.targetLinks.forEach(function(link) {
link.ty = ty;
ty += link.dy;
});
});
function ascendingSourceDepth(a, b) {
return a.source.y - b.source.y;
}
function ascendingTargetDepth(a, b) {
return a.target.y - b.target.y;
}
}
function center(node) {
return node.y + node.dy / 2;
}
function value(link) {
return link.value;
}
return sankey;
};
/* ------------------- our code ------------------------ */
var units = "Widgets";
var linkData = [{
"source": 7,
"target": 6,
"productIdx": "8350",
"qty": 27200,
"mv": 3054016,
"matrixCost": 300,
"sourceNodeName": "G",
"targetNodeName": "L",
"value": 27200
}, {
"source": 7,
"target": 11,
"productIdx": "8350",
"qty": 196599,
"mv": 22074135.72,
"matrixCost": 5000,
"sourceNodeName": "G",
"targetNodeName": "K",
"value": 196599
}, {
"source": 9,
"target": 11,
"productIdx": "8350",
"qty": 113401,
"mv": 12732664.28,
"matrixCost": 5020,
"sourceNodeName": "I",
"targetNodeName": "K",
"value": 113401
}, {
"source": 2,
"target": 10,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 100015,
"sourceNodeName": "C",
"targetNodeName": "J",
"value": 0
}, {
"source": 0,
"target": 10,
"productIdx": "8350",
"qty": 2500000,
"mv": 280700000,
"matrixCost": 100033,
"sourceNodeName": "A",
"targetNodeName": "J",
"value": 2500000
}, {
"source": 9,
"target": 5,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "I",
"targetNodeName": "F",
"value": 0
}, {
"source": 9,
"target": 3,
"productIdx": "8350",
"qty": 1309599,
"mv": 147041775.72,
"matrixCost": 240048,
"sourceNodeName": "I",
"targetNodeName": "D",
"value": 1309599
}, {
"source": 0,
"target": 5,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "A",
"targetNodeName": "F",
"value": 0
}, {
"source": 2,
"target": 5,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "C",
"targetNodeName": "F",
"value": 0
}, {
"source": 2,
"target": 3,
"productIdx": "8350",
"qty": 3250408,
"mv": 364955810.24,
"matrixCost": 240048,
"sourceNodeName": "C",
"targetNodeName": "D",
"value": 3250408
}, {
"source": 8,
"target": 1,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "H",
"targetNodeName": "B",
"value": 0
}, {
"source": 4,
"target": 1,
"productIdx": "8350",
"qty": 10,
"mv": 1122.8,
"matrixCost": 240048,
"sourceNodeName": "E",
"targetNodeName": "B",
"value": 10
}]
var nodes = [{
"nodeId": 0,
"nodeName": "A",
"entityCd": "16G"
}, {
"nodeId": 1,
"nodeName": "B",
"entityCd": "161"
}, {
"nodeId": 2,
"nodeName": "C",
"entityCd": "16G"
}, {
"nodeId": 3,
"nodeName": "D",
"entityCd": "XX"
}, {
"nodeId": 4,
"nodeName": "E",
"entityCd": "XX"
}, {
"nodeId": 5,
"nodeName": "F",
"entityCd": "XX"
}, {
"nodeId": 6,
"nodeName": "L",
"entityCd": "16G",
"bucketCd": "LoantoCoverDublinPBCustShort",
"bucketName": "Loan to Cover Dublin PB Cust Short",
"bucketType": "U"
}, {
"nodeId": 7,
"nodeName": "G",
"entityCd": "16G"
}, {
"nodeId": 8,
"nodeName": "H",
"entityCd": "XX"
}, {
"nodeId": 9,
"nodeName": "I",
"entityCd": "16G"
}, {
"nodeId": 10,
"nodeName": "J",
"entityCd": "16G"
}, {
"nodeId": 11,
"nodeName": "K",
"entityCd": "16G"
}]
var formatNumber = d3.format(",.0f"), // zero decimal places
format = function(d) {
return formatNumber(d)
};
// append the svg object to the body of the page
var svg = d3.select("#" + "chart"),
width = +svg.attr("width"),
height = +svg.attr("height");
var sankey = d3.sankey()
.nodeWidth(10)
.nodePadding(10)
.size([width - 1, height - 6]);
var path = sankey.link();
d3.selectAll('.tooltip-sankey').style("visibility", "hidden");
var tooltip = d3.select("body")
.append("div")
.attr("class", "tooltip-sankey")
.style("position", "absolute")
.style("z-index", "10")
.style("visibility", "hidden");
// load the data
sankey
.nodes(nodes)
.links(linkData)
.layout(32);
//node scale
var maxVal_node = d3.max(nodes.map(m => m.value));
var minVal_node = d3.min(nodes.map(m => m.value));
var nodeScale = d3.scaleLinear().domain([minVal_node, maxVal_node])
.range([10, 120]);
// add in the links
var link = svg.append("g").selectAll(".link")
.data(linkData)
.enter().append("path")
.attr("class", "link-sankey")
.attr("d", path)
.style('stroke', function(d) {
return d.color;
}).style("stroke-width", function(d) {
return Math.max(1, d.dy)
})
.sort(function(a, b) {
return b.dy - a.dy;
})
.on("mouseover", function(d) {
var sourceId, targetId;
for (var item in d.source.sourceLinks)
if (d.value === d.source.sourceLinks[item].value) sourceId = item;
for (var item in d.target.targetLinks)
if (d.value === d.target.targetLinks[item].value) targetId = item;
var source = d3.select("#inner-rect-" + d.source.id + "-" + sourceId);
var target = d3.select("#inner-rect-" + d.target.id + "-" + targetId);
source.style("stroke-opacity", 1).style("fill", "#1f77b4");
target.style("stroke-opacity", 1).style("fill", "#1f77b4");
//update text - one line
var sourceText = d3.select("#text-" + d.source.id);
sourceText.text(d.source.nodeName + ' : ' + d.value);
var targetText = d3.select("#text-" + d.target.id);
targetText.text(d.target.nodeName + ' : ' + d.value);
tooltip.html("Source: <b>" + d.source.nodeName + "</b><br/>Target: <b>" + d.target.nodeName + "</b><br/>Identifier: <b>" + +"</b>" + "</b><br/>Qty: <b>" + format(d.value) + "</b>" + "</b><br/>Mv($): <b>" + format(d.mv) + "</b>");
return tooltip.style("visibility", "visible");
})
.on("mousemove", function() {
var tooltipWidth = parseInt(tooltip.style("width"));
if (window.innerWidth - d3.event.pageX < tooltipWidth) return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX - tooltipWidth) + "px");
return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX + 10) + "px");
})
.on("mouseout", function(d) {
var sourceId, targetId;
for (var item in d.source.sourceLinks)
if (d.value === d.source.sourceLinks[item].value) sourceId = item;
for (var item in d.target.targetLinks)
if (d.value === d.target.targetLinks[item].value) targetId = item;
//update text - one line
var sourceText = d3.select("#text-" + d.source.id);
sourceText.text(d.source.nodeName + ' : ' + d.source.value);
var targetText = d3.select("#text-" + d.target.id);
targetText.text(d.target.nodeName + ' : ' + d.target.value);
return tooltip.style("visibility", "hidden");
});
// add in the nodes
var node = svg.append("g").selectAll(".node")
.data(nodes)
.enter().append("g")
.on("click", showConnections)
.on("mouseover", function(d) {
if (d.totalPledge == 0 || d.totalBorrow == 0) {
tooltip.html("Name: <b>" + d.nodeName + "</b><br/>Total Qty: <b>" + format(d.value) + "</b>");
} else {
tooltip.html("Name: <b>" + d.nodeName + "</b><br/>Total Qty: <b>" + format(d.value) + "</b>");
}
return tooltip.style("visibility", "visible");
})
.on("mousemove", function() {
var tooltipWidth = parseInt(tooltip.style("width"));
if (window.innerWidth - d3.event.pageX < tooltipWidth) return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX - tooltipWidth) + "px");
return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX + 10) + "px");
})
.on("mouseout", function() {
return tooltip.style("visibility", "hidden");
})
.attr("class", "node")
.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")";
})
.on("click", showConnections);
// add the rectangles for the nodes
node.append("rect")
.attr("height", function(d) {
return nodeScale(d.value);
})
.attr("width", sankey.nodeWidth())
.style("fill", function() {
return "#605f66"
})
.style("stroke", function(d) {
return d3.rgb(d.color).darker(2);
})
.on("click", showConnections)
// add in the title for the nodes
node.append("text")
.attr("x", -6)
.attr("y", function(d) {
return nodeScale(d.value) / 2
})
.attr("dy", ".15em")
.attr("text-anchor", "end")
//.style("font-size", "10px")
.attr("transform", null)
.attr("class", "nodeText")
.text(function(d) {
return d.nodeName;
})
.filter(function(d) {
return d.x < width / 2;
})
.attr("x", 6 + sankey.nodeWidth())
.attr("text-anchor", "start");
function showConnections(d) {
if (!d3.select(this).classed("selected")) {
d3.select(this).classed("selected", true);
d3.select(this).style("stroke", "black")
.style("stroke-opacity", 0.2);
//If this link is connected to the node
link.style("stroke-opacity", function(l) {
if (l.source.nodeName == d.nodeName || l.target.nodeName == d.nodeName) {
return 0.6;
} else
return 0.2;
});
} else {
d3.select(this).classed("selected", false);
d3.select(this).style("stroke", "black")
.style("stroke-opacity", 0.2)
link.style("stroke-opacity", function() {
return 0.2;
});
}
}
.node rect {
cursor: move;
}
.link {
fill: none;
stroke: #000;
stroke-opacity: .2;
}
.link:hover {
stroke-opacity: .5;
}
* {
font: 11px sans-serif;
}
.linkLabel {
z-index: 10;
}
svg line.links {
stroke: #999999;
stroke-opacity: 0.6;
stroke-width: 1px;
}
.link-sankey {
fill: none;
stroke: #1f77b4;
stroke-opacity: .2;
}
.link-sankey:hover {
stroke-opacity: .5 !important;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.13.0/d3.min.js"></script>
<svg width="550" height="400" id="chart"></svg>
此外，小节点有点重叠，中间没有任何空格。
提前致谢。
看来您一直在混淆 d3 的不同部分，而没有仔细阅读 d3-sankey 的文档。它已经内置了所有内容，可以根据节点的价值扩展节点。 d3.scaleLinear 适用于沿轴的图表，而 sankey 是一种完全不同的野兽。
根据您提供的代码（在 --- our code --- 之前），我发现每个节点都有一个属性 dx 表示宽度，dy 表示高度。使用它们彻底解决了问题。
编辑：我通过转换每个 link 的值更新了答案。通过使用 Math.sqrt() 并添加一个 baseWidth，我赋予了较小的数量比较大的数量更多的力量。这意味着 link 的宽度将不再是 直接 读取其值，但由于它仍然大于比例，所以这无关紧要。请注意，现在即使是最小的节点也有一些宽度。
d3.sankey = function() {
var sankey = {},
nodeWidth = 24,
nodePadding = 8,
size = [1, 1],
nodes = [],
links = [];
sankey.nodeWidth = function(_) {
if (!arguments.length) return nodeWidth;
nodeWidth = +_;
return sankey;
};
sankey.nodePadding = function(_) {
if (!arguments.length) return nodePadding;
nodePadding = +_;
return sankey;
};
sankey.nodes = function(_) {
if (!arguments.length) return nodes;
nodes = _;
return sankey;
};
sankey.links = function(_) {
if (!arguments.length) return links;
links = _;
return sankey;
};
sankey.size = function(_) {
if (!arguments.length) return size;
size = _;
return sankey;
};
sankey.layout = function(iterations) {
computeNodeLinks();
computeNodeValues();
computeNodeBreadths();
computeNodeDepths(iterations);
computeLinkDepths();
return sankey;
};
sankey.relayout = function() {
computeLinkDepths();
return sankey;
};
sankey.link = function() {
var curvature = .5;
function link(d) {
var x0 = d.source.x + d.source.dx,
x1 = d.target.x,
xi = d3.interpolateNumber(x0, x1),
x2 = xi(curvature),
x3 = xi(1 - curvature),
y0 = d.source.y + d.sy + d.dy / 2,
y1 = d.target.y + d.ty + d.dy / 2;
return "M" + x0 + "," + y0 +
"C" + x2 + "," + y0 +
" " + x3 + "," + y1 +
" " + x1 + "," + y1;
}
link.curvature = function(_) {
if (!arguments.length) return curvature;
curvature = +_;
return link;
};
return link;
};
// Populate the sourceLinks and targetLinks for each node.
// Also, if the source and target are not objects, assume they are indices.
function computeNodeLinks() {
nodes.forEach(function(node) {
node.sourceLinks = [];
node.targetLinks = [];
});
links.forEach(function(link) {
var source = link.source,
target = link.target;
if (typeof source === "number") source = link.source = nodes[link.source];
if (typeof target === "number") target = link.target = nodes[link.target];
source.sourceLinks.push(link);
target.targetLinks.push(link);
});
}
// Compute the value (size) of each node by summing the associated links.
function computeNodeValues() {
nodes.forEach(function(node) {
node.value = Math.max(
d3.sum(node.sourceLinks, value),
d3.sum(node.targetLinks, value)
);
});
}
// Iteratively assign the breadth (x-position) for each node.
// Nodes are assigned the maximum breadth of incoming neighbors plus one;
// nodes with no incoming links are assigned breadth zero, while
// nodes with no outgoing links are assigned the maximum breadth.
function computeNodeBreadths() {
var remainingNodes = nodes,
nextNodes,
x = 0;
while (remainingNodes.length) {
nextNodes = [];
remainingNodes.forEach(function(node) {
node.x = x;
node.dx = nodeWidth;
node.sourceLinks.forEach(function(link) {
if (nextNodes.indexOf(link.target) < 0) {
nextNodes.push(link.target);
}
});
});
remainingNodes = nextNodes;
++x;
}
//
moveSinksRight(x);
scaleNodeBreadths((size[0] - nodeWidth) / (x - 1));
}
function moveSourcesRight() {
nodes.forEach(function(node) {
if (!node.targetLinks.length) {
node.x = d3.min(node.sourceLinks, function(d) {
return d.target.x;
}) - 1;
}
});
}
function moveSinksRight(x) {
nodes.forEach(function(node) {
if (!node.sourceLinks.length) {
node.x = x - 1;
}
});
}
function scaleNodeBreadths(kx) {
nodes.forEach(function(node) {
node.x *= kx;
});
}
function computeNodeDepths(iterations) {
var nodesByBreadth = d3.nest()
.key(function(d) {
return d.x;
})
.sortKeys(d3.ascending)
.entries(nodes)
.map(function(d) {
return d.values;
});
//
initializeNodeDepth();
resolveCollisions();
for (var alpha = 1; iterations > 0; --iterations) {
relaxRightToLeft(alpha *= .99);
resolveCollisions();
relaxLeftToRight(alpha);
resolveCollisions();
}
function initializeNodeDepth() {
var ky = d3.min(nodesByBreadth, function(nodes) {
return (size[1] - (nodes.length - 1) * nodePadding) / d3.sum(nodes, value);
});
nodesByBreadth.forEach(function(nodes) {
nodes.forEach(function(node, i) {
node.y = i;
node.dy = node.value * ky;
});
});
links.forEach(function(link) {
link.dy = link.value * ky;
});
}
function relaxLeftToRight(alpha) {
nodesByBreadth.forEach(function(nodes, breadth) {
nodes.forEach(function(node) {
if (node.targetLinks.length) {
var y = d3.sum(node.targetLinks, weightedSource) / d3.sum(node.targetLinks, value);
//node.y += (y - center(node)) * alpha;
}
});
});
function weightedSource(link) {
return center(link.source) * link.value;
}
}
function relaxRightToLeft(alpha) {
nodesByBreadth.slice().reverse().forEach(function(nodes) {
nodes.forEach(function(node) {
if (node.sourceLinks.length) {
var y = d3.sum(node.sourceLinks, weightedTarget) / d3.sum(node.sourceLinks, value);
//node.y += (y - center(node)) * alpha;
}
});
});
function weightedTarget(link) {
return center(link.target) * link.value;
}
}
function resolveCollisions() {
nodesByBreadth.forEach(function(nodes) {
var node,
dy,
y0 = 0,
n = nodes.length,
i;
// Push any overlapping nodes down.
nodes.sort(function(a, b) {
return a.value > b.value ? -1 : a.value < b.value ? 1 : 0;
});
for (i = 0; i < n; ++i) {
node = nodes[i];
dy = y0 - node.y;
if (dy > 0) node.y += dy;
y0 = node.y + node.dy + nodePadding;
}
// If the bottommost node goes outside the bounds, push it back up.
dy = y0 - nodePadding - size[1];
if (dy > 0) {
y0 = node.y -= dy;
// Push any overlapping nodes back up.
for (i = n - 2; i >= 0; --i) {
node = nodes[i];
dy = node.y + node.dy + nodePadding - y0;
if (dy > 0) node.y -= dy;
y0 = node.y;
}
}
});
}
function ascendingDepth(a, b) {
return a.y - b.y;
}
}
function computeLinkDepths() {
nodes.forEach(function(node) {
node.sourceLinks.sort(ascendingTargetDepth);
node.targetLinks.sort(ascendingSourceDepth);
});
nodes.forEach(function(node) {
var sy = 0,
ty = 0;
node.sourceLinks.forEach(function(link) {
link.sy = sy;
sy += link.dy;
});
node.targetLinks.forEach(function(link) {
link.ty = ty;
ty += link.dy;
});
});
function ascendingSourceDepth(a, b) {
return a.source.y - b.source.y;
}
function ascendingTargetDepth(a, b) {
return a.target.y - b.target.y;
}
}
function center(node) {
return node.y + node.dy / 2;
}
function value(link) {
return link.value;
}
return sankey;
};
/* ------------------- our code ------------------------ */
var units = "Widgets";
var linkData = [{
"source": 7,
"target": 6,
"productIdx": "8350",
"qty": 27200,
"mv": 3054016,
"matrixCost": 300,
"sourceNodeName": "G",
"targetNodeName": "L",
"value": 27200
}, {
"source": 7,
"target": 11,
"productIdx": "8350",
"qty": 196599,
"mv": 22074135.72,
"matrixCost": 5000,
"sourceNodeName": "G",
"targetNodeName": "K",
"value": 196599
}, {
"source": 9,
"target": 11,
"productIdx": "8350",
"qty": 113401,
"mv": 12732664.28,
"matrixCost": 5020,
"sourceNodeName": "I",
"targetNodeName": "K",
"value": 113401
}, {
"source": 2,
"target": 10,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 100015,
"sourceNodeName": "C",
"targetNodeName": "J",
"value": 0
}, {
"source": 0,
"target": 10,
"productIdx": "8350",
"qty": 2500000,
"mv": 280700000,
"matrixCost": 100033,
"sourceNodeName": "A",
"targetNodeName": "J",
"value": 2500000
}, {
"source": 9,
"target": 5,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "I",
"targetNodeName": "F",
"value": 0
}, {
"source": 9,
"target": 3,
"productIdx": "8350",
"qty": 1309599,
"mv": 147041775.72,
"matrixCost": 240048,
"sourceNodeName": "I",
"targetNodeName": "D",
"value": 1309599
}, {
"source": 0,
"target": 5,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "A",
"targetNodeName": "F",
"value": 0
}, {
"source": 2,
"target": 5,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "C",
"targetNodeName": "F",
"value": 0
}, {
"source": 2,
"target": 3,
"productIdx": "8350",
"qty": 3250408,
"mv": 364955810.24,
"matrixCost": 240048,
"sourceNodeName": "C",
"targetNodeName": "D",
"value": 3250408
}, {
"source": 8,
"target": 1,
"productIdx": "8350",
"qty": 0,
"mv": 0,
"matrixCost": 240048,
"sourceNodeName": "H",
"targetNodeName": "B",
"value": 0
}, {
"source": 4,
"target": 1,
"productIdx": "8350",
"qty": 10,
"mv": 1122.8,
"matrixCost": 240048,
"sourceNodeName": "E",
"targetNodeName": "B",
"value": 10
}]
var nodes = [{
"nodeId": 0,
"nodeName": "A",
"entityCd": "16G"
}, {
"nodeId": 1,
"nodeName": "B",
"entityCd": "161"
}, {
"nodeId": 2,
"nodeName": "C",
"entityCd": "16G"
}, {
"nodeId": 3,
"nodeName": "D",
"entityCd": "XX"
}, {
"nodeId": 4,
"nodeName": "E",
"entityCd": "XX"
}, {
"nodeId": 5,
"nodeName": "F",
"entityCd": "XX"
}, {
"nodeId": 6,
"nodeName": "L",
"entityCd": "16G",
"bucketCd": "LoantoCoverDublinPBCustShort",
"bucketName": "Loan to Cover Dublin PB Cust Short",
"bucketType": "U"
}, {
"nodeId": 7,
"nodeName": "G",
"entityCd": "16G"
}, {
"nodeId": 8,
"nodeName": "H",
"entityCd": "XX"
}, {
"nodeId": 9,
"nodeName": "I",
"entityCd": "16G"
}, {
"nodeId": 10,
"nodeName": "J",
"entityCd": "16G"
}, {
"nodeId": 11,
"nodeName": "K",
"entityCd": "16G"
}]
var formatNumber = d3.format(",.0f"), // zero decimal places
format = function(d) {
return formatNumber(d)
};
// append the svg object to the body of the page
var svg = d3.select("#" + "chart"),
width = +svg.attr("width"),
height = +svg.attr("height");
var sankey = d3.sankey()
.nodeWidth(10)
.nodePadding(10)
.size([width - 1, height - 6]);
var path = sankey.link();
d3.selectAll('.tooltip-sankey').style("visibility", "hidden");
var tooltip = d3.select("body")
.append("div")
.attr("class", "tooltip-sankey")
.style("position", "absolute")
.style("z-index", "10")
.style("visibility", "hidden");
// Transform the data so even nodes with small links always have something to show for it.
var baseWeight = 50
linkData.forEach(function(link) {
link.value = baseWeight + Math.sqrt(link.qty);
});
// load the data
sankey
.nodes(nodes)
.links(linkData)
.layout(32);
// add in the links
var link = svg.append("g").selectAll(".link")
.data(linkData)
.enter().append("path")
.attr("class", "link-sankey")
.attr("d", path)
.style('stroke', function(d) {
return d.color;
}).style("stroke-width", function(d) {
return Math.max(1, d.dy)
})
.sort(function(a, b) {
return b.dy - a.dy;
})
.on("mouseover", function(d) {
var sourceId, targetId;
for (var item in d.source.sourceLinks)
if (d.value === d.source.sourceLinks[item].value) sourceId = item;
for (var item in d.target.targetLinks)
if (d.value === d.target.targetLinks[item].value) targetId = item;
var source = d3.select("#inner-rect-" + d.source.id + "-" + sourceId);
var target = d3.select("#inner-rect-" + d.target.id + "-" + targetId);
source.style("stroke-opacity", 1).style("fill", "#1f77b4");
target.style("stroke-opacity", 1).style("fill", "#1f77b4");
//update text - one line
var sourceText = d3.select("#text-" + d.source.id);
sourceText.text(d.source.nodeName + ' : ' + d.value);
var targetText = d3.select("#text-" + d.target.id);
targetText.text(d.target.nodeName + ' : ' + d.value);
tooltip.html("Source: <b>" + d.source.nodeName + "</b><br/>Target: <b>" + d.target.nodeName + "</b><br/>Identifier: <b>" + +"</b>" + "</b><br/>Qty: <b>" + format(d.value) + "</b>" + "</b><br/>Mv($): <b>" + format(d.mv) + "</b>");
return tooltip.style("visibility", "visible");
})
.on("mousemove", function() {
var tooltipWidth = parseInt(tooltip.style("width"));
if (window.innerWidth - d3.event.pageX < tooltipWidth) return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX - tooltipWidth) + "px");
return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX + 10) + "px");
})
.on("mouseout", function(d) {
var sourceId, targetId;
for (var item in d.source.sourceLinks)
if (d.value === d.source.sourceLinks[item].value) sourceId = item;
for (var item in d.target.targetLinks)
if (d.value === d.target.targetLinks[item].value) targetId = item;
//update text - one line
var sourceText = d3.select("#text-" + d.source.id);
sourceText.text(d.source.nodeName + ' : ' + d.source.value);
var targetText = d3.select("#text-" + d.target.id);
targetText.text(d.target.nodeName + ' : ' + d.target.value);
return tooltip.style("visibility", "hidden");
});
// add in the nodes
var node = svg.append("g").selectAll(".node")
.data(nodes)
.enter().append("g")
.on("click", showConnections)
.on("mouseover", function(d) {
if (d.totalPledge == 0 || d.totalBorrow == 0) {
tooltip.html("Name: <b>" + d.nodeName + "</b><br/>Total Qty: <b>" + format(d.value) + "</b>");
} else {
tooltip.html("Name: <b>" + d.nodeName + "</b><br/>Total Qty: <b>" + format(d.value) + "</b>");
}
return tooltip.style("visibility", "visible");
})
.on("mousemove", function() {
var tooltipWidth = parseInt(tooltip.style("width"));
if (window.innerWidth - d3.event.pageX < tooltipWidth) return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX - tooltipWidth) + "px");
return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX + 10) + "px");
})
.on("mouseout", function() {
return tooltip.style("visibility", "hidden");
})
.attr("class", "node")
.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")";
})
.on("click", showConnections);
// add the rectangles for the nodes
node.append("rect")
.attr("height", function(d) { return d.dy; })
.attr("width", function(d) { return d.dx; })
.style("fill", "#605f66")
.style("stroke", function(d) {
return d3.rgb(d.color).darker(2);
})
.on("click", showConnections)
// add in the title for the nodes
node.append("text")
.attr("x", -6)
.attr("y", function(d) { return d.dy / 2; })
.attr("dy", ".15em")
.attr("text-anchor", "end")
//.style("font-size", "10px")
.attr("transform", null)
.attr("class", "nodeText")
.text(function(d) {
return d.nodeName;
})
.filter(function(d) {
return d.x < width / 2;
})
.attr("x", 6 + sankey.nodeWidth())
.attr("text-anchor", "start");
function showConnections(d) {
if (!d3.select(this).classed("selected")) {
d3.select(this).classed("selected", true);
d3.select(this).style("stroke", "black")
.style("stroke-opacity", 0.2);
//If this link is connected to the node
link.style("stroke-opacity", function(l) {
if (l.source.nodeName == d.nodeName || l.target.nodeName == d.nodeName) {
return 0.6;
} else
return 0.2;
});
} else {
d3.select(this).classed("selected", false);
d3.select(this).style("stroke", "black")
.style("stroke-opacity", 0.2)
link.style("stroke-opacity", function() {
return 0.2;
});
}
}
.node rect {
cursor: move;
}
.link {
fill: none;
stroke: #000;
stroke-opacity: .2;
}
.link:hover {
stroke-opacity: .5;
}
* {
font: 11px sans-serif;
}
.linkLabel {
z-index: 10;
}
svg line.links {
stroke: #999999;
stroke-opacity: 0.6;
stroke-width: 1px;
}
.link-sankey {
fill: none;
stroke: #1f77b4;
stroke-opacity: .2;
}
.link-sankey:hover {
stroke-opacity: .5 !important;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.13.0/d3.min.js"></script>
<svg width="550" height="400" id="chart"></svg>