[英]OpenLayers 3: simple LineString example
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! 我是OpenLayers的新手,我正在寻找一些帮助在地图上绘制线条,我一直在尝试各种不同的帖子关于绘制LineStrings但我无法让它工作! I just need to figure out how to draw a line between to coordinates.
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: 继承了我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? 有人能指出我正确的方向吗? or tell me where i am going wrong?
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);
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: 至:
var points = [
[78.65, -32.65], [-98.65, 12.65]
];
The ol.geom.LineString constructor accept an array of coordinates. ol.geom.LineString构造函数接受一个坐标数组。
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