How to autogenerate a workspace and base name for output parameter in Python script tool?

MarAlcaraz — Wed, 06 Aug 2014 11:01:36 GMT

As all geoprocessing tools do, I would like my Python script tool to generate automatically the workspace and base name for outputs.

In ArcGIS Help online, "Understanding validation in script tools" says about internal validation that:

Generate a default catalog path for output datasets.

After reading carefully (maybe not enough) the "Customizing tool behavior in a Python toolbox" from ArcGIS Help, I have not been able to adapt my script .

I have modified the Validation Class adding the getParameterInfo method, with the following code:

def getParameterInfo(self):

# Input raster

param0 = arcpy.Parameter(displayName="Introduce Piezometry raster dataset:",

name="piezoras",

datatype="GPRasterLayer",

parameterType="Required",

direction="Input")

# Output raster

param1 = arcpy.Parameter(displayName="Define output Groundwater Flow Direction raster dataset:",

name="direcras",

datatype="DERasterDataset",

parameterType="Required",

direction="Output")

param1.parameterDependencies = [param0.name]

param1.schema.clone = True

params = [param0, param1]

return params

Some doubts:

The definitions for these parameters in Parameters Tab do not change, why? The code in Validation Tab is not related to Parameters Tab???
How can I related them? With the displayName property? Where is the name property in Parameters Tab?
In general, How to autogenerate a workspace and base name for output parameter in Python script tool in dialog tool window?

Thanks in advance

topic How to autogenerate a workspace and base name for output parameter in Python script tool? in Developers Questions

How to autogenerate a workspace and base name for output parameter in Python script tool?