我正在尝试为比利时的一个城市生成一个 TopoJSON，称为 Gent。他们给了我们一个 shapefile（在这里找到https://www.dropbox.com/s/21qv9eqez0qe0va/Gent-shapefile.zip?dl=0）。
然而，生成 TopoJSON 对我来说是一个挑战。
我尝试使用mapshaper：
{
"type": "Topology",
"objects": {
"deelgebieden_3": {
"type": "GeometryCollection",
"bbox": [94655.09380000085, 185681.89059999958, 113641.54690000085, 208831.7499999996],
"geometries": [{
"type": "Polygon",
"arcs": [
[0, 1]
]
}, {
"type": "Polygon",
"arcs": [
[2, 3, 4, 5, -2, 6]
]
}, {
"type": "MultiPolygon",
"arcs": [
[
[-4, 7]
],
[
[-7, -1, -6, 8]
]
]
}]
}
},
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...
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}
}
看起来不错，但不工作。使用命令行进行转换更糟糕：名称被删除，...
我使用 d3 Datamaps，并在其上使用墨卡托投影：
const projection = d3.geo.mercator()
.center([4.294531, 50.864921])
.scale(scale)
.translate([el.offsetWidth / 2, el.offsetHeight / 2]);
const path = d3.geo.path().projection(projection);
return {
path: path,
projection: projection
};
可悲的是，这导致：
想法？