Overview of Analyzing Feature Classes
Concept Procedure Quick Reference
 
 
 

Use buffers and overlays to analyze feature classes.

Buffers identify areas at a specified distance from a geographic feature. Once you specify a feature and generate a buffer around it, you can identify or select features that fall inside or outside the boundary of the buffer.

Use buffers to analyze features by proximity.

Overlays compare two feature classes or layers that are spatially related. Once you select the feature classes to compare and the type of overlay to perform, AutoCAD Map 3D creates a new layer and data store containing the results of the comparison. You can connect to the comparison data store as you would to any other data store.

Use overlays to compare two layers that are related spatially.

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