GIS_GEOMETRY: Building a JSON Geometry Object

Syntax: How to Build a JSON Geometry Object

GIS_GEOMETRY(geotype, wkid, geometry)

where:

geotype

Alphanumeric

Is a geometry type, for example, 'esriGeometryPolygon' ,esriGeometryPolyline, 'esriGeometryMultipoint', 'EsriGeometryPoint', 'EsriGeometryExtent'..

wkid

Alphanumeric

Is a valid spatial reference ID. WKID is an abbreviation for Well-Known ID, which identifies a projected or geographic coordinate system.

geometry

A geometry in JSON.

The output is returned as TX.

Example: Building a JSON Geometry Object

The following request builds a polygon geometry of the area encompassing ZIP code 10036 in Manhattan. The input geometry object is stored in a text (.ftm) file that is cross-referenced in the esri-citibike Master File. The field containing the geometry object is GEOMETRY.

DEFINE FILE esri/esri-citibike
WKID/A10  = '4326';
 MASTER_GEOMETRY/TX256 (GEOGRAPHIC_ROLE=GEOMETRY_AREA) = 
    GIS_GEOMETRY( 'esriGeometryPolygon', WKID , GEOMETRY );
END
TABLE FILE esri/esri-citibike 
 PRINT 
    START_STATION_NAME AS Station
    START_STATION_LATITUDE AS Latitude
    START_STATION_LONGITUDE AS Longitude
    MASTER_GEOMETRY AS 'JSON Geometry Object'
 WHERE START_STATION_ID EQ 479  
ON TABLE SET PAGE NOLEAD
 ON TABLE SET STYLE * 
type=report, grid=off, size=10,$
 ENDSTYLE 
END

The output is shown in the following image.

Example: Charting a Geometry Object

The following request uses GIS_GEOMETRY to build a geometry object and chart it on an Esri map.

DEFINE FILE esri-citibike
WKID/A10  = '4326';
 MASTER_GEOMETRY/TX256 (GEOGRAPHIC_ROLE=GEOMETRY_AREA) = 
    GIS_GEOMETRY( 'esriGeometryPolygon', WKID , GEOMETRY );
END

 GRAPH FILE ESRI-CITIBIKE 
 PRINT 
   START_STATION_NAME
   END_STATION_NAME
   ON TABLE PCHOLD FORMAT JSCHART 
 ON TABLE SET LOOKGRAPH CHOROPLETH
 ON TABLE SET EMBEDHEADING ON 
 ON TABLE SET AUTOFIT ON 
 ON TABLE SET STYLE * 
  TYPE=REPORT, TITLETEXT='Map', PAGESIZE=E, CHART-LOOK=com.esri.map, $ 
  TYPE=DATA, COLUMN=N1, /*START_STATION_NAME*/  
   BUCKET=tooltip, $
  TYPE=DATA, COLUMN=N2, /*END_STATION_NAME*/

  *GRAPH_JS_FINAL 
 
"legend": {"visible": true}, 
"extensions" : { "com.esri.map" : 
  { "scalebar" : 
{ 
    "scalebarUnit": "dual", 
    "attachTo" : "bottom-left" 
  }, 
  "baseMapInfo": { 
       "drawBasemapControl" : false, 
       "showArcGISBasemaps" : false, 
            "customBaseMaps" : [ 
            {"ibiBaseLayer" : "dark-gray"} 
        ] 
   }, 
  "overlayLayers": 
  [{ 
  "ibiDataLayer": {"map-geometry" :  {"map_by_field" : "MASTER_GEOMETRY"}}, "title" : "Chart"}] 
  }, 
"introAnimation": "{\"enabled\":false}" 
} 
 
  *END 
 ENDSTYLE 
 HEADING 
  "Chart Geometry Object" 
END

The output is shown in the following image.