Leaflet.js：是否有可能通过属性过滤geoJSON功能？ [英] Leaflet.js: is it possible to filter geoJSON features by property?

问题描述

我环顾四周，看到很多关于如何显示/隐藏图层的信息。这很酷，但是因为我可以添加任意的属性geoJSON功能，我希望能够相应地过滤它们。

例如，如果我有功能1,2和; 3具有这些属性

1. small |红色|很好


2. large |绿色|酸


3. small |红色| hot

如何按大小筛选它们？或按颜色或味道？ 是的，你可以，只需添加一个过滤器功能，如：

  L.geoJson（someFeatures，{
 filter：function（feature，layer）{
 return feature .properties.show_on_map; 
} 
}）。addTo（map）; 
  

或者如果你想动态更新，在这个其他SO问题中有一个很好的答案：
传单：更新GeoJson过滤器？

I'm looking around and I see a lot of information about how to show/hide layers. That's cool, but since I can add arbitrary properties to geoJSON features I kind of expect to be able to filter them accordingly.

For instance if I have features 1, 2 & 3 with these properties

1. small | red | sweet
2. large | green | sour
3. small | red | hot

How would I filter them by size? Or by color or flavor?

解决方案

http://leafletjs.com/examples/geojson.html

Yes you can, just add a filter function like:

L.geoJson(someFeatures, {
    filter: function(feature, layer) {
        return feature.properties.show_on_map;
    }
}).addTo(map);

Or if you want dynamic updating, there's a great answer in this other SO question: Leaflet: Update GeoJson filter?

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