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What does it mean to label a map in ArcGIS?
In ArcGIS, labeling refers specifically to the process of automatically generating and placing descriptive text for map features. A label is a piece of text on the map that is dynamically placed and whose text string is derived from one or more feature attributes.
What happens when you turn on dynamic labeling in ArcMap?
When you turn on dynamic labeling, ArcMap places as many labels on the map as possible without any overlap. In areas where features are tightly clustered, some features may not be labeled. As you zoom in on your map, more labels will dynamically appear. Learn more about displaying dynamic labels
How to set default font size in ArcGIS?
You can set a default font name and font size to be used when labeling on the ArcMap Options dialog box. Click the Label Manager button on the Labeling toolbar. Click a label class in the Label Classes list. Choose whether to change the text symbol or to specify a label style:
How to create a picture point symbol in ArcGIS?
To create a picture point symbol, you can right-click to select “New” and then fill out the “Description” tab to give the new symbol a unique name for future reference. Next, you will select the Properties tab at the bottom of the Symbol pane. Click the “Layers” button.
How can I check for NULL values in the field?
Starting at ArcGIS for Desktop 10.1, null values in an attribute table are returned as the string ‘None’ in the Field Calculator using Python. Knowing this, an if/elif statement can be used to find whether values are null or not. Here is an example script that checks if a field contains null values: findNulls (!fieldA!)
How to control the Order of labels on a map?
There are four ways to control which features are labeled: Set the label priority that controls the order in which labels are placed on the map. Set label weights and feature weights to establish a ranking system for labels when there is a conflict (overlap) on the map with other labels or features.