bartjan

Remove join

Discussion created by bartjan on Aug 20, 2012
Latest reply on Sep 8, 2017 by BBladdick-esristaff
Hi all,

I'm having a problem removing a join with python code (ArcGIS 10.0).

With a python script I'm doing a spatial SORT for a number of polygons which fall within a certain number of regions. Within a function I do the following:

  • Create a temporary featureclass as result from the Spatial sort

  • Put the value of the ObjectID in a new field

  • Add a join between the input layer and the temporary FC

  • Calculate the value of the sorted objected for the input FC

  • Remove the join


This is the code of the python function.
def spatialsort (inlayer, outfc, nutsvalue):
    # (temp FC, spatial sort, add field, calc OID, atribuir valor join, ...)
    # temp fc Nome
    tempfcnome = tempfd + "\\SORT" + nutsvalue
    tempfcnome2 = "SORT" + nutsvalue
    if gp.Exists(tempfcnome):
        gp.Delete_management(tempfcnome, "")

    gp.Sort_management(inlayer, tempfcnome, "SHAPE ASCENDING", "PEANO")

    # Adicionar campo SORT
    gp.AddField_management(tempfcnome, "SORT_TEMP_ID", "LONG", 6)

    # Calcular campo
    # nao seria necessario pode fazer o calculate a partir OBJECTID original
    gp.CalculateField_management(tempfcnome, "SORT_TEMP_ID", "!OBJECTID!","PYTHON")

    # Adicionar Join
    joinField = "GRD_NEWID"
    fieldList = ["SORT_TEMP_ID"] # OBJECTID

    # criar table view (alternative to using featurelayer):
    theDesc = gp.Describe(inlayer)
    gp.MakeTableView_management (theDesc.catalogPath, "temptableview")
    theDesc = gp.Describe(tempfcnome)
    gp.MakeTableView_management (theDesc.catalogPath, "temptableview2")
    

    # Using tableviews
    gp.JoinField_management ("temptableview", joinField, "temptableview2", joinField, fieldList) # tempfcnome
  



Everything works fine except the last step. I tried to remove the join using as input:

Using the fullname of the layer:
[INDENT]arcgisscripting.ExecuteError: Failed to execute. Parameters are not valid. The value cannot be a feature class[/INDENT]Using only the basename:
[INDENT]ERROR 000732: Layer Name or Table View: Dataset TEST2_GRID_1KM_CONT does not exist or is not supported[/INDENT]Using the name of layer (this case gridlayer):
[INDENT]arcgisscripting.ExecuteError: ERROR 000229: Cannot open gridlayer[/INDENT]
Using tableviews as input, error:
[INDENT]    gp.RemoveJoin_management ("temptableview",  "temptableview2")
arcgisscripting.ExecuteError: ERROR 000229: Cannot open temptableview[/INDENT]


I checked the following topic http://forums.arcgis.com/threads/13163-arcgis-10-is-there-a-way-to-remove-all-joins-with-python, but this didn�??t offer any solution.

Does anyone knows what I�??m doing wrong? Any suggestions for alternative ways?

Thank you,
Bart Schoenmakers

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