检查重复标记传单geoman

问题描述

我正在尝试检查每个geojson功能是否为标记。如果要删除放置的图层，请再次初始化绘图标记。

如果位置不同，我将其添加到要素图层中。

问题在于eachLayer始终返回true，因为它遍历所有图层，并且始终返回true，因为标记已添加到要素中。所以它总是重复。

const num = 1115487.2644548;

const len = String(parseInt(num)).length
const two = len-2;
console.log(num/10**two); // without testing the len > 2

这是摆弄，我很忘了添加重要的代码。 https://jsfiddle.net/2ftmy0bu/2/

解决方法

将您的代码更改为：

// listen to when a new layer is created
map.on('pm:create',function(e) {
    //should only place one marker each time

    // check if the layer with the same latlng exists
    var eq = features.getLayers().find(function(layer){
      if(layer instanceof L.Marker) {
                return layer.getLatLng().equals(e.layer.getLatLng())
      }else{
        return false;
      }
  }) !== undefined;

  if(!eq) {
    console.log('not equal')
    features.addLayer(e.layer);
    map.pm.disableDraw('Marker')
    //if marker is placed on the map and it is not placed on same place as another marker
  } else if(eq) {
    console.log('equal')
    //if marker is placed on the map over another marker,remove marker,then init draw marker again.
    map.removeLayer(e.layer);
    map.pm.enableDraw('Marker',{
      snappable: true,snapDistance: 20,finishOn: 'click' || 'mousedown',});
    // TODO: I think you don't want this
    //   features.addLayer(e.layer);
  }   
});

https://jsfiddle.net/falkedesign/c6Lf758j/