GetLayerScale()

Summary

Gets the range of scales at which a layer displays (autoscale).

 

Syntax

scales = GetLayerScale(string layer_name)

 

Argument	Contents
layer_name	The name of the layer

 

Returns

An array of two elements:

 

Element	Type	Contents
1	Real	The minimum scale at which the layer displays, or null if there is no minimum
2	Real	The maximum scale at which the layer displays, or null if there is no maximum

 

Notes

• GetLayerScale() returns autoscale information for the current map only; the autoscale parameters for a layer can vary from map to map.

• SetLayerScaleFlag() turns autoscaling on or off for a layer without clearing the autoscale settings from the layer, and GetLayerScaleFlag() gets the autoscale flag for a layer. Make sure that the flag is "True" to have autoscaling active for a layer.

Example

// Display the minimum scale of the County layer

scales = GetLayerScale("County")

if scales[1] = null then ShowMessage("There is no minimum scale.")

else     ShowMessage("The minimum scale is: " + r2s(scales[1]))

 

Error Codes

Error Type	Meaning
NotFound	The specified layer does not exist

 

See Also

Function	Summary
GetLayerAutoscale()	Determines whether a layer is hidden in the current map due to autoscaling
GetLayerScaleFlag()	Gets the autoscale flag for a layer
GetSetScale()	Gets the range of scales at which a selection set displays (autoscale)
GetScale()	Gets the scale of a map
SetLayerScale()	Sets the range of scales at which a layer displays (autoscale)
SetLayerScaleFlag()	Sets the autoscale flag for a layer
SetSetScale()	Sets the range of scales at which a selection set displays (autoscale)
SetScale()	Sets the scale of a map