Formating Legend Labels for Symbology by Quantities

ArcMap legend labels always seem to come out in an undesired format and always need adjustments. For layers that are symbolized based upon quantity there is an easy way to change the number format.  (If you are not sure how to symbolize by quantity, read ArcMap Symbology by Quantity.) When symbolizing quantities that need format adjustments, you can edit each label individually or use the built in format option. To use this option:

1. Open Layer Properties for desired layer.

2. Symbolize layer based upon quantity.

3. Left Click the Label Heading.

Notice the number of decimal places.

4. Choose Format Labels…

5. Make desired changes.

*Note: You can change number type such as currency, direction, percentage, rate, fraction, angle, etc.  There is also the ability to round and set alignment.  Also notice the additional options available.

6. Click Ok.

Results are shown and updated in the legend. Notice that only one decimal place is now shown.  Remember that this is also updated in the legend.

Enhance Your ArcMap Legends

The cartographic design of a map is an important part to the delivery of your information.   One of the key features is the legend.  It defines how the map is perceived.  If the legend is not presented in a helpful role, then the map is of no value.  There are many elements to a legend.  Understanding each area and how they work is important.  Here are some excellent insights to ArcMap legends that are within this video:

• Multiple Columns
• Titles
• Frames
• Drop Shadows
• Layers Swatches
• Font Types
• Description Layouts

Check it out and take your maps to the next level!

Note: Videos are broadcast through youtube.com.  Some browsers may block this content.

Related Readings

Creating a Whole Page Legend in ArcMap

Multi-Lined Legend Labels in ArcMAP

ArcGIS Tutorial: Manually Editing the Legend in ArcGIS/ArcMAP

Related Books

Making Maps: A Visual Guide to Map Design for GIS
Designing Better Maps: A Guide for GIS Users