VECReadGeoInfo

Demonstrates how to retrieve georeferencing information for a vector layer.

Remarks

This example illustrates how to read the map units, upper left and lower right coordinates of a selected layer.

Code

   local int tfid, int layer
 local GeoInfo gi

 try

 layer = 28

 tfid = DBOpen( GetPCIHOME() + "/demo/irvine.pix", "r")
 call VECReadGeoInfo(tfid, layer, gi)
 call DBClose(tfid)

 print "Map Units:", gi.Units
 print "Upper Left:", gi.ULX, " ", gi.ULY
 print "Lower Right:", gi.LRX, " ", gi.LRY

 onerror
   print "Error: "+ GetLastErrorMessage()
 endonerror

Output

Map Units:UTM    11 S E000
Upper Left:0.0  0.0
Lower Right: 1.0 1.0