Shapefile：XY坐标和经度/纬度坐标

Question

我有以下两个shapefile：

> summary(precincts1)

Object of class SpatialPolygonsDataFrame

Coordinates:
        min       max
x -74.25545 -73.70002
y  40.49613  40.91540

    Precinct        Shape_Leng       Shape_Area       
 Min.   :  1.00   Min.   : 17083   Min.   : 15286897  
 1st Qu.: 31.50   1st Qu.: 29900   1st Qu.: 37593804  
 Median : 64.50   Median : 46887   Median : 65891025  
 Mean   : 62.57   Mean   : 65720   Mean   :111231564  
 3rd Qu.: 95.50   3rd Qu.: 76375   3rd Qu.:133644443  
 Max.   :123.00   Max.   :309518   Max.   :781725787  

和

> summary(bnd_nhd)

Object of class SpatialPolygonsDataFrame

Coordinates:
       min       max
x 871512.3  912850.5
y 982994.4 1070956.9

   SHAPE_area         SHAPE_len    
 Min.   : 3173813   Min.   : 7879  
 1st Qu.: 9687122   1st Qu.:13514  
 Median :14363449   Median :17044  
 Mean   :19674314   Mean   :19516  
 3rd Qu.:27161251   3rd Qu.:23821  
 Max.   :68101106   Max.   :49269  

他们的坐标系不同。我可以用传单在地图上覆盖“precincts1”的形状，但我不能对“bnd_nhd”做同样的事情。我正在使用闪亮的，maptools和传单。如何转换shapefile或更改地图上的设置，以便我可以将地图叠加为“bnd_nhd”？

Answer 1

这应该有效：

package org.busTracker.trackingService;

/*
 * Class to wrap the response for the Receiver class. 
 */

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;

//To return status without route null.
@JsonInclude(JsonInclude.Include.NON_NULL)
public class SDBeanPost {

    public int status;
    public int route;
    public String direction;

    public SDBeanPost() {
        Receiver receiver = new Receiver();

        direction = "";
        status = 230;

    }

    public String toJson() {

        ObjectMapper mapper = new ObjectMapper();
        String json = null;
        try {
            json = mapper.writeValueAsString(this);
        } catch (JsonProcessingException e) {
            e.printStackTrace();

        }
        return json;
    }

}