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I'm trying to create a python script that creates color-coded symbology by county for multiple maps with different data. I've never created a layer file for the purposes of symbology before, but I figured you simply had to save the layer. However, every time I run by script, no symbology is visible. Is there a way to automate symbology that I'm missing? Thanks!

    # Process: Add Join
    arcpy.AddJoin_management(Map_Lyr, "CNTYIDFP", selected_input, "FIPS", "KEEP_COMMON")

    #Process: Make Feature Layer
    arcpy.MakeFeatureLayer_management(Map_Lyr, lyr_again)

    #Process: Add Symbology
    arcpy.ApplySymbologyFromLayer_management(lyr_again, symbol_lyr)

    # Save to Layer File
    arcpy.SaveToLayerFile_management(lyr_again, Final_Product, "", "CURRENT")

closed as unclear what you're asking by PolyGeo Nov 22 '16 at 10:14

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • I recommend that you take a step back from presenting your whole script and asking for help debugging it, and instead, just post a code snippet from it that works up to the point where you see something unexpected. One immediate change that I would make is to remove import arcgisscripting. It will not make any difference but is superseded by import arcpy so it is just one extra unnecessary line of code. – PolyGeo Aug 28 '14 at 23:39
  • This is a Q&A that may help with some ideas on how to get the crux of what you need to do into a code snippet that, once working, can be used to add back the former code one in small chunks at a time. – PolyGeo Aug 28 '14 at 23:45
  • Thanks, I'm starting to look at that. I just modified my code to just hte part that adds the symbology, but I had a few questions about the link you posted...is the code in the example you gave such that "Population" is the layer having symbology applied to it, and "Sub_Region" is the field the symbology is being applied to? – Alex Aug 29 '14 at 13:58
  • I am not sure if you have managed to resolve your issue, if not, the issue most probably is caused by your "join" before "apply symbology", since a join temporarily changes field names, i.e., <target data source name>.<field1>, <target data source name>.<field2>,... <joined data source name>.field1,<joined data source name>.field2, etc. Could you confirm that the symbology field of your layer file uses "the right field name"? – fatih_dur Feb 24 '15 at 23:26