Learning ArcGIS Pro

4. Right-click on the new field you created. It should be shown using the alias you
specified when you created the new field, Length in miles. Also note that the field is
Null. Null which means it is empty. It has no values stored.
5. Select Calculate Field. This will open the Geoprocessing pane in the right-hand side
of the interface.
6. Within the Fields box, double-click in Shape_Length. This will insert the name of the
field with the correct syntax into the expression box located below the Fields and
Helpers.
7. Click on the / symbol located below the Helpers box to add that to the expression.
That symbol will divide the value stored in the Shape_Length field for each record by
a value you will specify next.
8. In the expression box, type 5280 after the / symbol. That is the number of feet in a
mile. Your expression should look like this:
9. Once you verify your expression, click on the Run button located at the bottom of
the Geoprocessing pane.
10. When the process is complete, close the Geoprocessing pane.
When the Calculate Field is complete, you should now see the field you created filled
with values. If you scroll through the table, you will see that it calculated a length in miles
for all the records in the table. The Calculate Field tool is very powerful and efficient way
to populate a field.
If you are not proceeding to the next exercise, save your project and close ArcGIS Pro.