topic Add Field not accessible from an Attribute Table in Data Management Questions

Add Field not accessible from an Attribute Table

TerrySlocum — Thu, 10 Jan 2013 21:00:46 GMT

I have downloaded USA Counties from ArcGIS Online. When I open the Attribute Table, I find that the Add Field option is grayed out. How do I get this option to activate?

Thanks for your help.

Re: Add Field not accessible from an Attribute Table

JuanLuera — Mon, 14 Jan 2013 17:07:39 GMT

Hola,

In looking at this file for you (USA Counties) from ArcGIS Online, and downloading it. I found where the reason you are not able to add a new field, is because this file is a SDC file. Which is a compressed uneditable file, and if you are looking to making edits or changes to it. My suggestion would be to make a new file geodatabase, and then select out an area of interest from the USA Counties file, and then export these selected records to a new smaller dataset into the newly created file geodatabase. Then you will be able to make edit or changes, such as adding a new field to this new layer. Gracias!

SDC feature class
A highly compressed, read-only data structure that can store spatial geometry (points, lines, and polygons), and attribute data.

Re: Add Field not accessible from an Attribute Table

TerrySlocum — Mon, 14 Jan 2013 18:05:50 GMT

Thanks very much for the information.

Terry Slocum