我正在尝试使用L.geoJSON
为geoJSON FeatureCollection设置样式,但是在偏离默认样式方面一直没有成功。
我已经尝试过L.geoJSON
的文档(请参见下文),并将样式属性直接放入geoJSON功能中。这两个选项都不会影响图层的显示
//coordinates on map
var map = L.map('map').setView([29.76, -95.37], 10);
L.esri.basemapLayer('Gray').addTo(map);
var fromProjection = "+proj=merc +lon_0=0 +k=1 +x_0=0 +y_0=0 +a=6378137 +b=6378137 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs";
var toProjection = "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs ";
var myStyle = {
"color": "#ff7800",
"weight": 5,
"opacity": 0.65
};
var myLayer = L.geoJSON(watersheds,{
coordsToLatLng: function (p) {
p = proj4(fromProjection,toProjection,p); // reproject each point
p = [p[1],p[0]] // swap the values
return p; // return the lat/lng pair
}},{
style: myStyle
}).addTo(map);
预期结果:我的图层将变为橙色且略微透明
实际结果:我的图层是默认的蓝色
(类似于此:http://bl.ocks.org/andrew-reid/e472886c83819e8459178a4a56548449)
答案 0 :(得分:0)
尝试一下:
//coordinates on map
var map = L.map('map').setView([29.76, -95.37], 10);
L.esri.basemapLayer('Gray').addTo(map);
var fromProjection = "+proj=merc +lon_0=0 +k=1 +x_0=0 +y_0=0 +a=6378137 +b=6378137 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs";
var toProjection = "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs ";
var myStyle = {
"color": "#ff7800",
"weight": 5,
"opacity": 0.65
};
myLayer = L.geoJson(watersheds, {
onEachFeature: function (feature, layer) {
layer.setStyle(feature.myStyle);
}
}).addTo(map);
答案 1 :(得分:0)
我发现了问题。
关于这一点的文档并不多,但是L.geoJSON的第二个参数是'options'。在coordsToLatLong之后,我无意间结束了争论。这种情况的正确代码粘贴在下面。
var map = L.map('map').setView([29.76, -95.37], 10);
L.esri.basemapLayer('Gray').addTo(map);
var fromProjection = "+proj=merc +lon_0=0 +k=1 +x_0=0 +y_0=0 +a=6378137 +b=6378137 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs";
var toProjection = "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs ";
var myStyle = {
"color": "#ff7800",
"weight": 5,
"opacity": 0.65
};
var myLayer = L.geoJSON(watersheds,{
style: myStyle,
coordsToLatLng: function (p) {
p = proj4(fromProjection,toProjection,p); // reproject each point
p = [p[1],p[0]] // swap the values
return p; // return the lat/lng pair
}}).addTo(map);
您可以使用console.log(myLayer.options)检查您的答案