GIS_DRIVE_ROUTE: Calculating the Driving Directions Between Geometry Points

Syntax: How to Calculate the Drive Route Between Geometry Points

GIS_DRIVE_ROUTE(geo_start_point,geo_end_point)

where:

geo_start_point,geo_point2

Fixed length alphanumeric, large enough to hold the JSON describing the point (for example, A200).

Is the starting point for which you want to calculate the drive route.

Note: You can generate a geometry point using the GIS_POINT function.

geo_end_point,geo_point2

Fixed length alphanumeric, large enough to hold the JSON describing the point (for example, A200).

Is the ending point for which you want to calculate the drive route.

Note: You can generate a geometry point using the GIS_POINT function.

The format of the field to which the drive route will be returned is TX.

Example: Calculating the Drive Route Between Two Geometry Points

The following uses a citibike .csv file that contains station names, latitudes and longitudes, and trip start times and end times. It uses the GIS_POINT function to define geometry points for start stations and end stations. It then uses GIS_DRIVE_ROUTE to calculate the route to get from the end point to the start point.

DEFINE FILE esri/esri-citibike
STARTPOINT/A200 = GIS_POINT('4326', START_STATION_LONGITUDE, START_STATION_LATITUDE);
ENDPOINT/A200 = GIS_POINT('4326', END_STATION_LONGITUDE, END_STATION_LATITUDE);
Route/TX140 (GEOGRAPHIC_ROLE=GEOMETRY_LINE) = 
          GIS_DRIVE_ROUTE(ENDPOINT, STARTPOINT);
END
TABLE FILE esri/esri-citibike
PRINT START_STATION_NAME AS Start END_STATION_NAME AS End Route
WHERE START_STATION_ID EQ 147  
ON TABLE SET PAGE NOLEAD
ON TABLE SET STYLE *
TYPE=REPORT, GRID=OFF,SIZE-11,$
ENDSTYLE
END

The output is shown in the following image.

Example: Charting a Driving Route Between Two Geometry Points

The following request uses GIS_DRIVE_ROUTE to generate a driving route between a station start point and end point and charts the route on an Esri map.

DEFINE FILE esri-citibike
STARTPOINT/A200 = GIS_POINT('4326', START_STATION_LONGITUDE, START_STATION_LATITUDE);
ENDPOINT/A200 = GIS_POINT('4326', END_STATION_LONGITUDE, END_STATION_LATITUDE);
Route/TX80 (GEOGRAPHIC_ROLE=GEOMETRY_LINE) = 
          GIS_DRIVE_ROUTE(ENDPOINT, STARTPOINT);
END

GRAPH FILE ESRI-CITIBIKE 
 PRINT 
   START_STATION_NAME
   END_STATION_NAME
WHERE START_STATION_ID EQ 147
 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" : "Route"}}, "title" : "Chart"}] 
  }, 
"introAnimation": "{\"enabled\":false}" 
} 
 
  *END 
 ENDSTYLE 
 HEADING 
  "Chart Drive Route" 
END

The output is shown in the following image.