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I have a GP service I would like to consume in a Flex application, but one of the input data types can be a raster. ArcGIS Server does not support a raster data type as an input parameter, but according to their documentation here - Input and Output Data Types - you can create a variable in your model/script of type String and convert that into the data type your model requires. In their example they use an Areal Unit, but I need to convert to a raster dataset/raster layer. How would I implement this?

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If I'm reading the docs correctly, isn't it just a matter of selecting "Raster Dataset" from the Data type dropdown and feeding in your string value as the Expression, and that will convert it from string to raster?

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I've tried that, but I have run into two issues: 1) The String representation of a raster dataset is the catalogPath. When I use that as the value for the string I get a syntax error. 2) I have no idea what to do with the output, it just says "1" and cannot be changed –  Baskinomics Oct 5 '11 at 17:29

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