Friday, May 18, 2012

Uncompressing Multiple File Geodatabases

Often when I receive spatial data from individuals on a DVD or CD, it is in the form of a file geodatabase and it's compressed.  If all the data is in a single file geodatabase, it is not a big problem, but when you get multiple file geodatabases, that's when I break out my python.

Here is a helpful little script that will try to uncompress all file geodatabases in a single folder.  It should be noted that if a file geodatabase is already uncompressed, it will just be ignored.


import arcpy
from arcpy import env
if __name__ == '__main__':
    try:
        workspace = arcpy.GetParameterAsText(0)
        env.workspace = workspace
        fgdbs = arcpy.ListWorkspaces("*","FileGDB")
        for fgdb in fgdbs:
            arcpy.UncompressFileGeodatabaseData_management(fgdb)
        env.workspace = None
        arcpy.SetParameterAsText(1,True)
    except:
        arcpy.AddError(str(arcpy.GetMessages(2)))
        arcpy.SetParameterAsText(1,False)
So what I have done is list all file geodatabases in a given workspace (folder), then I just use the standard UncompressFileGeodatabaseData_management().  When I'm done processing, I set my environmental workspace variable to None just to clean up some loose ends.  I could delete the object like fgdbs, but since they are self contained within the function, those variables should not persist beyond the life of the function.

Enjoy

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