在 vega-lite 饼图中按大小排序的弧
Arcs ordered by size in vega-lite pie chart
我正在尝试创建一个圆弧按大小(顺时针)排序的饼图,但不知道如何做。
似乎“theta”中的“sort”参数指向了“color”的默认顺序,例如:
{
"$schema": "https://vega.github.io/schema/vega-lite/v4.json",
"description": "A pie chart",
"data": {
"values": [
{"category": "Category 1", "value": 4},
{"category": "Category 2", "value": 8},
{"category": "Category 4", "value": 25},
{"category": "Category 0", "value": 12}
]
},
"encoding": {
"color": {"field": "category", "type": "nominal"},
"theta": {"field": "value", "type": "quantitative", "sort": "descending"}
},
"layer": [
{"mark": {"type": "arc", "outerRadius": 85}}
],
"view": {"stroke": null}
}
this is the result: arcs are ordered by reverse category name
我可以按“值”对图例(“颜色”)进行排序,但无论我为“theta”的“排序”指定什么,弧都不会按“值”大小排序。
{
"$schema": "https://vega.github.io/schema/vega-lite/v4.json",
"description": "A pie chart",
"data": {
"values": [
{"category": "Category 1", "value": 4},
{"category": "Category 2", "value": 8},
{"category": "Category 4", "value": 25},
{"category": "Category 0", "value": 12}
]
},
"encoding": {
"color": {"field": "category", "type": "nominal", "sort": {"field" :"value", "order": "ascending"}},
"theta": {"field": "value", "type": "quantitative", "sort": "descending"}
},
"layer": [
{"mark": {"type": "arc", "outerRadius": 85}}
],
"view": {"stroke": null}
}
this is the result: legend is ordered, arcs still have the same order
听起来您想要 order
编码。例如 (open in editor):
{
"$schema": "https://vega.github.io/schema/vega-lite/v4.json",
"description": "A pie chart",
"data": {
"values": [
{"category": "Category 1", "value": 4},
{"category": "Category 2", "value": 8},
{"category": "Category 4", "value": 25},
{"category": "Category 0", "value": 12}
]
},
"encoding": {
"color": {"field": "category", "type": "nominal"},
"theta": {"field": "value", "type": "quantitative", "stack": true},
"order": {"field": "value", "type": "quantitative", "sort": "descending"}
},
"layer": [
{"mark": {"type": "arc", "outerRadius": 85}}
],
"view": {"stroke": null}
}
我正在尝试创建一个圆弧按大小(顺时针)排序的饼图,但不知道如何做。
似乎“theta”中的“sort”参数指向了“color”的默认顺序,例如:
{
"$schema": "https://vega.github.io/schema/vega-lite/v4.json",
"description": "A pie chart",
"data": {
"values": [
{"category": "Category 1", "value": 4},
{"category": "Category 2", "value": 8},
{"category": "Category 4", "value": 25},
{"category": "Category 0", "value": 12}
]
},
"encoding": {
"color": {"field": "category", "type": "nominal"},
"theta": {"field": "value", "type": "quantitative", "sort": "descending"}
},
"layer": [
{"mark": {"type": "arc", "outerRadius": 85}}
],
"view": {"stroke": null}
}
this is the result: arcs are ordered by reverse category name
我可以按“值”对图例(“颜色”)进行排序,但无论我为“theta”的“排序”指定什么,弧都不会按“值”大小排序。
{
"$schema": "https://vega.github.io/schema/vega-lite/v4.json",
"description": "A pie chart",
"data": {
"values": [
{"category": "Category 1", "value": 4},
{"category": "Category 2", "value": 8},
{"category": "Category 4", "value": 25},
{"category": "Category 0", "value": 12}
]
},
"encoding": {
"color": {"field": "category", "type": "nominal", "sort": {"field" :"value", "order": "ascending"}},
"theta": {"field": "value", "type": "quantitative", "sort": "descending"}
},
"layer": [
{"mark": {"type": "arc", "outerRadius": 85}}
],
"view": {"stroke": null}
}
this is the result: legend is ordered, arcs still have the same order
听起来您想要 order
编码。例如 (open in editor):
{
"$schema": "https://vega.github.io/schema/vega-lite/v4.json",
"description": "A pie chart",
"data": {
"values": [
{"category": "Category 1", "value": 4},
{"category": "Category 2", "value": 8},
{"category": "Category 4", "value": 25},
{"category": "Category 0", "value": 12}
]
},
"encoding": {
"color": {"field": "category", "type": "nominal"},
"theta": {"field": "value", "type": "quantitative", "stack": true},
"order": {"field": "value", "type": "quantitative", "sort": "descending"}
},
"layer": [
{"mark": {"type": "arc", "outerRadius": 85}}
],
"view": {"stroke": null}
}