GetLayerDBPos()

Summary

Gets the layer "position" within a geographic file.

 

Syntax

position = GetLayerDBPos(string layer_name)

 

Argument	Contents
layer_name	The name of the layer of interest

 

Returns

An integer indicating the layer index number within the geographic file, starting from zero.

 

Notes

• Line layers are stored in geographic files that have two layers. The first layer represents intersection points, and the second layer represents line features.

• Some geographic files from earlier versions of Caliper Corporation GIS products also include multiple layers. GetLayerDBPos() provides backward compatibility with those versions of geographic files.

Example

if GetLayerType() = "Line" then do

     idx = GetLayerDBPos()

     if idx = 0 then ShowMessage("The current layer is the node layer.")

     end

 

Error Codes

Error Type	Meaning
NotFound	The specified layer does not exist

 

See Also

Function	Summary
GetLayerType()	Gets the type of a layer
GetLayerDB()	Gets the name of the geographic or image file in which a layer is stored