I have an attribute table of a shapefile with some related attributes tables linked to the original table. I would like to show in the map through Symbology > Categories > Unique values one of the column from one of the related tables.

The column isn't visible in the Symbology "value field". I can only see the ones from the original table.

How can I make the related column appear ?

  • What program is this in? Can you see the attributes in the attribute table? – HeikkiVesanto Aug 10 '17 at 15:42
  • Which software? In some cases, after join both tables, you need to save the feature to a new file to apply symbology in the old relate table, now part of the attribute table. – aldo_tapia Aug 10 '17 at 15:45
  • It is in ArcGIS. I have the shapefile, I open the open attribute table and then I go to Related tables option and I chose the one relate table that I want and there I get the columns that I am interested in. – M.Lath Aug 10 '17 at 16:01
  • But when I go to Properties > Symbology > Categories, I cannot find the columns from the related tables. – M.Lath Aug 10 '17 at 16:01

Instead of "Relating" your external table, you should "Join" it. This way, you will be able to see the joined table values in your shapefile.

See here a short vid if needed.

Below some screens :

Join table

Join table2

  • Don't forget to tick the answer as accepted + upvote if it helped you :) – gisnside Aug 15 '17 at 6:07

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