Syntax

   @JSONGeometry( <command>, <json flavor>, <attrName> ) 
   
Arguments

   <command>   
   
      To specify whether to import or export the geometry of a feature from/to 
      an attribute.

      Range: TO_ATTRIBUTE | FROM_ATTRIBUTE   
      
   <json flavor>  
   
      The name of the JSON flavor in which the geometry will be read/written. 
      Currently only GeoJSON is supported.

      Range: GEOJSON 
      
   <attrName>  
   
      The name of the attribute to have the geometry saved to or retrieved from 
      the feature.

      Range: String  
      
Description

      Note: For a method of storing and retrieving geometry in an attribute 
      where the geometry is fully preserved (including measures and complex 
      chains involving arcs), see @Geometry. 

   This command is used to set or get the feature geometry. The <json flavor> 
   string indicates the type of JSON object to read or write. Depending on the 
   <command> string, the attribute given will be the source or destination for 
   the geometry of the feature.

      Note: In TO_ATTRIBUTE mode, if the feature has no geometry, then the 
      resulting attribute will have a blank value, because the GeoJSON 
      specifications provide no way to represent a "null" geometry. Conversely, 
      however, in FROM_ATTRIBUTE mode, if the specified attribute has a blank 
      value, then the feature's geometry will be left untouched and a warning 
      output.