Javascript OpenLayers 3：简单的 LineString 示例
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OpenLayers 3: simple LineString example
提问by ThriceGood
i'm new to OpenLayers and i am looking for some help drawing lines on a map, i've been trying various things from various different posts about drawing LineStrings but i can't get it to work! I just need to figure out how to draw a line between to coordinates.
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的关于绘制 LineStrings 的帖子，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。
heres some code that i tried but didn't work:
这是我尝试过但没有用的一些代码：
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);
i also tried this but to no avail:
我也试过这个，但无济于事：
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);
can someone point me in the right direction? or tell me where i am going wrong?
有人可以指出我正确的方向吗？或者告诉我哪里出错了？
EDIT: thanks to Jonatas, the working code looks like this:
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);
采纳答案by Jonatas Walker
Just change this:
只需改变这个：
var points = [
new ol.geom.Point([78.65, -32.65]),
new ol.geom.Point([-98.65, 12.65])
];
To:
到：
var points = [
[78.65, -32.65], [-98.65, 12.65]
];
The ol.geom.LineStringconstructor accept an array of coordinates.
该ol.geom.LineString构造函数接受坐标的数组。
