Joining Excel tables with attribute tables in ArcGIS can be useful for combining spatial data with non-spatial data.
Here's how to use Joins and Relates:
Using Joins:
Joins are used to temporarily link data based on a common attribute or field. When you join tables, you can work with the combined data for the current map session. Here's how to use joins with an Excel table:
Prepare Your Data:
Ensure that you have a common field between your Excel table and the attribute table in your GIS dataset.
Open ArcMap:
Launch ArcMap and open your map document.
Add Excel Table:
In the ArcMap table of contents, right-click on the layer for which you want to join the Excel table and select "Joins and Relates" --- "Join."
Select the Excel table as the table to join.
Specify Join Fields:
Choose the field in your Excel table that matches the field in your attribute table.
Choose Join Type:
You can choose between different types of joins: inner, left, right, and full outer join, depending on how you want to handle matching and non-matching records.
Apply the Join:
Click "OK" to apply the join. Your Excel data is temporarily joined with the attribute table in your map session.
View the Joined Data:
You can now see and work with the joined data in the attribute table and use it for symbology and analysis in the map.