Hi Chris,

 

 

Assume a Location is associated with an AssetType by 1 to 1.

 

If the AssetType will not be used in the translation directly, "Choice with Alias" parameter can be used to map AssetType (Display Name) to Location (Value).

 

If not, the Scripted (Python / Tcl) Parameter could be a solution; it can be used to create a parameter value depending on other parameter value.

 

This is a Scripted (Python) Parameter example: ----- # Map AssetType to Location by 1 to 1. assetToLocation = {   'Water' : 'Location Foo',   'Sewer' : 'Location Bar',   'Drainage' : 'Location FooBar' }   # Get the value of other parameter named "AssetType". assetType = FME_MacroValuesc'AssetType']   # Return the Location associated with the AssetType. if assetType in assetToLocation:     return assetToLocationeassetType] else:     return 'Undefined Location' -----   Reference link:

 

Scripted (Python) and Scripted (Tcl)

 

http://docs.safe.com/fme/html/FME_Workbench/Default.htm#Parameters/scripted_python_tcl.htm

 

Takashi

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Thanks for the reponse.

 

 

I may not have explained it very well. The location wouldn't be associated with an asset type on a 1:1 basis.

 

 

Please see example explained a bit further below;

 

 

AssetType

• Water
• Sewer

 

If Water is selected then Location parameter would display

• Town A
• Town B
• Town C...

 

If Sewer is selected then the Location parameter would display

• Town X
• Town Y
• Town Z...

 

Regards

 

Chris

 

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Ah, you want to create dynamically the choice list of a Choice type parameter...

 

 

The parameter definition (including choice list) is static, I don't think it's possible to define the choice list of a parameter at run-time, unfortunately.

 

As you say, defining multiple Location parameters for each AssetType would be a good solution. e.g. SwereLocation, WaterLocation and more.   The way to create dynamically a choice list (but it's not in a usual parameter)  I can think of is: create FME Parameter Dialog Box with a choice list based on the AssetType in the Startup Python Script, save the selected location as a global variable, and get the value with a PythonCaller.

 

My post in this thread could be a hint of how to do that.

 

Message or Alert Box

 

http://fmepedia.safe.com/AnswersQuestionDetail?id=906a0000000cojVAAQ

 

 

This way will be an interesting challenge, but it could be difficult to maintain in the future since it is a little complicated. I don't know whether it will be better solution.

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p.s. I confirmed that an FME Parameter Dialog Box with a choice list can be created dynamically in a Scripted (Python) Parameter. In this way, since the selected Location will be set to a parameter, you don't need to use a global variable and a PythonCaller.

 

Although this may not be a general way, I'll provide a script example if necessary.

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