OpenLayers 3:简单的 LineString 示例
OpenLayers 3: simple LineString example
我是 OpenLayers 的新手,我正在寻找在地图上绘制线条的帮助,我一直在尝试各种不同帖子中关于绘制 LineString 的各种方法,但我无法让它工作!我只需要弄清楚如何在坐标之间画一条线。
下面是一些我试过但没有用的代码:
var points = [
new ol.geom.Point([78.65, -32.65]),
new ol.geom.Point([-98.65, 12.65])
];
var featureLine = new ol.Feature({
geometry: new ol.geom.LineString(points)
});
var sourceLine = new ol.source.Vector({
features: [featureLine]
});
var vectorLine = new ol.layer.Vector({
source: sourceLine
});
map.addLayer(vectorLine);
我也试过这个但是没用:
var layerLine = new ol.layer.Vector({
source: new ol.source.Vector({
features: [new ol.Feature({
geometry: new ol.geom.LineString(points, 'XY'),
name: 'Line'
})]
}),
});
map.addLayer(vectorLine);
有人能指出我正确的方向吗?或者告诉我哪里出错了?
编辑:感谢 Jonatas,工作代码如下所示:
var coordinates = [[78.65, -32.65], [-98.65, 12.65]];
var layerLines = new ol.layer.Vector({
source: new ol.source.Vector({
features: [new ol.Feature({
geometry: new ol.geom.LineString(coordinates),
name: 'Line'
})]
}),
});
map.addLayer(layerLines);
只需更改此:
var points = [
new ol.geom.Point([78.65, -32.65]),
new ol.geom.Point([-98.65, 12.65])
];
收件人:
var points = [
[78.65, -32.65], [-98.65, 12.65]
];
ol.geom.LineString 构造函数接受一个坐标数组。
我是 OpenLayers 的新手,我正在寻找在地图上绘制线条的帮助,我一直在尝试各种不同帖子中关于绘制 LineString 的各种方法,但我无法让它工作!我只需要弄清楚如何在坐标之间画一条线。
下面是一些我试过但没有用的代码:
var points = [
new ol.geom.Point([78.65, -32.65]),
new ol.geom.Point([-98.65, 12.65])
];
var featureLine = new ol.Feature({
geometry: new ol.geom.LineString(points)
});
var sourceLine = new ol.source.Vector({
features: [featureLine]
});
var vectorLine = new ol.layer.Vector({
source: sourceLine
});
map.addLayer(vectorLine);
我也试过这个但是没用:
var layerLine = new ol.layer.Vector({
source: new ol.source.Vector({
features: [new ol.Feature({
geometry: new ol.geom.LineString(points, 'XY'),
name: 'Line'
})]
}),
});
map.addLayer(vectorLine);
有人能指出我正确的方向吗?或者告诉我哪里出错了?
编辑:感谢 Jonatas,工作代码如下所示:
var coordinates = [[78.65, -32.65], [-98.65, 12.65]];
var layerLines = new ol.layer.Vector({
source: new ol.source.Vector({
features: [new ol.Feature({
geometry: new ol.geom.LineString(coordinates),
name: 'Line'
})]
}),
});
map.addLayer(layerLines);
只需更改此:
var points = [
new ol.geom.Point([78.65, -32.65]),
new ol.geom.Point([-98.65, 12.65])
];
收件人:
var points = [
[78.65, -32.65], [-98.65, 12.65]
];
ol.geom.LineString 构造函数接受一个坐标数组。