leafletjs:折线列表到geojson
leafletjs: polyline list into geojson
我有折线列表。我想让它更有条理。如何将我的多段线列表放入 GeoJSON 中?
var point1 = new coordsToLatLngArray(0, 100);
var point2 = new coordsToLatLngArray(200, 150);
var point3 = new coordsToLatLngArray(400, 70);
var point4 = new coordsToLatLngArray(10, 70);
var point5 = new coordsToLatLngArray(90, 50);
var pointList = [point1, point2, point3, point4, point5];
var firstpolyline = new L.polyline(pointList, {
color: 'red',
weight: 3,
opacity: 0.5,
smoothFactor: 1
});
firstpolyline.addTo(map);
我正在尝试使用:http://leafletjs.com/examples/geojson.html
但它没有用。我的路线在地图之外:
var geojsonFeature = [{
"type": "LineString",
"coordinates":
[
[0,0],
[-100,100]
]
}];
var myStyle = {
"color": "#ff7800",
"weight": 5,
"opacity": 0.65
};
var myLayer = L.geoJson(coordsToLatLngArray(), {style: myStyle }).addTo(l);
myLayer.addData(geojsonFeature);
只会向coordsToLatLngArray
传递一个参数,一个数组:
[longitude,latitude]
函数必须如下所示:
var coordsToLatLngArray = function(c) {
var e = fixLat(c[1]),
t = c[0],
n = e / latScale + latScaleVal / 2 / latScale,
r = t / longScale + longScaleVal / 2 / longScale;
return [-n, r]
};
注意:在 geoJSON 中,坐标具有相反的顺序,[longitude,latitude]
,因此坐标必须是:
[
[100, 0],
[150, 200],
[70,400],
[70,10],
[50,90]
]
绘制特征调用:
var myLayer = L.geoJson(geojsonFeature, {
style: myStyle,
coordsToLatLng:coordsToLatLngArray
}).addTo(l);
我有折线列表。我想让它更有条理。如何将我的多段线列表放入 GeoJSON 中?
var point1 = new coordsToLatLngArray(0, 100);
var point2 = new coordsToLatLngArray(200, 150);
var point3 = new coordsToLatLngArray(400, 70);
var point4 = new coordsToLatLngArray(10, 70);
var point5 = new coordsToLatLngArray(90, 50);
var pointList = [point1, point2, point3, point4, point5];
var firstpolyline = new L.polyline(pointList, {
color: 'red',
weight: 3,
opacity: 0.5,
smoothFactor: 1
});
firstpolyline.addTo(map);
我正在尝试使用:http://leafletjs.com/examples/geojson.html 但它没有用。我的路线在地图之外:
var geojsonFeature = [{
"type": "LineString",
"coordinates":
[
[0,0],
[-100,100]
]
}];
var myStyle = {
"color": "#ff7800",
"weight": 5,
"opacity": 0.65
};
var myLayer = L.geoJson(coordsToLatLngArray(), {style: myStyle }).addTo(l);
myLayer.addData(geojsonFeature);
只会向coordsToLatLngArray
传递一个参数,一个数组:
[longitude,latitude]
函数必须如下所示:
var coordsToLatLngArray = function(c) {
var e = fixLat(c[1]),
t = c[0],
n = e / latScale + latScaleVal / 2 / latScale,
r = t / longScale + longScaleVal / 2 / longScale;
return [-n, r]
};
注意:在 geoJSON 中,坐标具有相反的顺序,[longitude,latitude]
,因此坐标必须是:
[
[100, 0],
[150, 200],
[70,400],
[70,10],
[50,90]
]
绘制特征调用:
var myLayer = L.geoJson(geojsonFeature, {
style: myStyle,
coordsToLatLng:coordsToLatLngArray
}).addTo(l);