leaflet js：将POI绘制为画布 [英] leaflet js: draw POIs as canvas

问题描述

我想用Leaflet绘制许多地理点。因此，我想使用HTML5画布来提高性能。
我的数据是geoJSON。正如我在Leaflet的文档中看到的那样，不可能将地理位置绘制为画布。

I want to draw many geo points with Leaflet. Therefore I want to use HTML5 canvas to improve the performance. My datasoure is geoJSON. As I saw in the documention of Leaflet, it is not possible to draw the geo positions as canvas yet.

var anotherGeojsonLayer = new L.GeoJSON(coorsField, {
        pointToLayer: function (latlng){
            return new L.Marker(latlng, {
                icon: new BaseballIcon()
            });
        }
    });

我想我应该在这里联系：

I think I should hook up here:

pointToLayer：function（latlng）{}

pointToLayer: function (latlng) { }

有人知道如何将我的latlng对象绘制为画布？

Does somebody know how to draw my latlng objects as canvas?

推荐答案

我是Leaflet的作者。您可以使用L.CircleMarker而不是常规Marker，并使用实验L_PREFER_CANVAS开关将矢量渲染为Canvas（而不是SVG），如下所示： https://github.com/CloudMade/Leaflet/blob/master/debug/vector/vector-canvas.html

I'm Leaflet author. You can do this by using L.CircleMarker instead of regular Marker, and also using an experimental L_PREFER_CANVAS switch to render vectors as Canvas (instead of SVG), like this: https://github.com/CloudMade/Leaflet/blob/master/debug/vector/vector-canvas.html

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