Latest Contributions by ChrisBrannin

I am trying to use the updateCursor but with little luck... What I would like to do is copy field values from an existing field in the table to a newly created field in the table. The issue I am having is that some tables have different name values and field types. I wonder if I am overcomplicating the whole issue or if I am setting something up incorrectly. I am just not sure at this point. Any insight and help with this will be greatly appreciated! I am getting error 999999 on "return convertArcObjectToPythonObject(self._arc_object.GetValue(*gp_fixargs(args)))". for filename in filenames:          if fnmatch.fnmatch(filename, "*Anno*") == True:             print "Skipped annotation file: " + filename          elif fnmatch.fnmatch(filename, "*grid*") == True:             print "Skipped grid file: " + filename          else:             #LOOP FIELDS             fieldList = arcpy.ListFields(os.path.join(dirpath, filename))             for field in add_Fields:                 if field[0] in [f.name for f in fieldList]:                     print "Field name: " + field[0] + " exists in " + filename + " DO NOT ADD"                 else:                     print "Adding " + field[0] + " name to table " + filename                     arcpy.AddField_management(*(os.path.join(dirpath, filename),) + field)             #create field search list             possibleSearchFields = ["ENG_NAME", "Name"]             updateField = ["New_Name"]             searchFields = []             #Loop through possibleSearchFields             for psf in possibleSearchFields:                 if psf in [f.name for f in fieldList]:                     #add to searchFields                     searchFields.append(psf)             #LOOP ROWS                 cur = arcpy.UpdateCursor(os.path.join(dirpath, filename))                 for row in cur:                     for searchField in searchFields:                         if row.getValue(updateField) == None:                                 print searchField + "exists in the table and is updating: " + filename                                 row.setValue(updateField, row.getValue(searchField))                         else:                             print " No name field in the search list: " + filename Thank you Chris ... View more

Hello I would like to use arcpy.Exists() to handle existing featureclasses in a file-GDB but am having a problem with the argument. The problem (for me) stems from splitting a single featureclass into 2 new layers into 2 separate geodatasets. ex. Layer1 becomes Layer1_A and layer1_B from attributes A and B and are placed into datasets A and B respectively. This is all good, but when I run the script again, the files would need to be either over written (arcpy.env.overwriteOutput = True) or ignored. So I turned to arcpy.Exists(). But since the select_analysis is running twice and adding '_A' and '_B' I am not sure how to handle the argument. Any help or suggestions are greatly appreciated! Sample code: for filename in filenames:         if "TOD" in [f.name for f in arcpy.ListFields(os.path.join(dirpath, filename))]:             if not arcpy.Exists(#Something to handle A and B):                 arcpy.Select_analysis(os.path.join(dirpath, filename), r"C:/testGDB.gdb/Layer_A/" + filename + "_A", '"TOD" = \'A\'')                                arcpy.Select_analysis(os.path.join(dirpath, filename), r"C:/testGDB.gdb/Layer_B/" + filename + "_B", '"TOD" = \'B\'')             else:                 print "Already exists" ... View more

Hello This might be a silly question but what is the best way to define an urban center. Is there a certain threshold to consider? Is it best to classify it by using LANDSAT? Thanks for any help. ... View more