I am using ArcMap10.3.1 and Business Analyst 103.1 (2014 data).
I am wondering why there are so many labels needed to identify
freeways. I attach a map of Portland OR, showing interstate 5 labelled
13 times on a relatively short, straight stretch of the highway.
Why is that? Surely it isn't necessary. What parameter can
I set to control it? When I examine the label properties of
the layer (Layer Properties => Labels => Placement)
I see under Duplicate Labels that the box for
Place one label per feature is checked.
That cannot be an accurate description of what
the checkbox does.
I will answer my own question.
It occurs because roads consist of line segments and each segment gets the same label.
The Maplex engine avoids this.
Layer Properties=>Labels=>Placement=>Label Density=>Remove Duplicates
The Options will also allow you to fine tune the label placement
(eg allowing labels to repeat provided they are a certain distance apart)
You can choose to use the Maplex Engine on the Frame Properties.