[GitHub] [carbondata] MarvinLitt commented on a change in pull request #3481: [CARBONDATA-3548]Geospatial Support： add hash id create，query condition analyze and generate hash id list

[GitBox]

MarvinLitt commented on a change in pull request #3481: [CARBONDATA-3548]Geospatial Support： add hash id create，query condition analyze and generate hash id list
URL: https://github.com/apache/carbondata/pull/3481#discussion_r352002157
 
 

 ##########
 File path: core/src/main/java/org/apache/carbondata/core/geo/GeoHashImpl.java
 ##########
 @@ -31,10 +31,73 @@
  * GeoHash default implementation
  */
 public class GeoHashImpl extends CustomIndex<List<Long[]>> {
+  // 角度转弧度的转换因子
+  private static final double CONVERT_FACTOR = 180.0;
+  // 地球半径
+  private static final double EARTH_RADIUS = 6371004.0;
+
+  private static final String GEOHASH = "geohash";
+  // 赤道经度1度或者纬度1度对应的地理空间距离
 
 Review comment:
   done

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