Using Expressions to Filter Feature Data

Navigating While Creating Expressions

Creating Expressions For Geospatial Features

Filtering the Layers You Add to a Map

 

Autodesk Expression Builder > Creating Expressions For Geospatial Features > 

Using Expressions to Filter Feature Data

Concept

Procedure

You can filter layers based on a single property, multiple properties, a location in the map that you specify, or a set of conditions.

Before you create an expression for the filter, you select the feature layers to filter. Methods for doing this vary, depending on whether you are using AutoCAD Map 3D or MapGuide Studio. For example, in AutoCAD Map 3D, you can filter feature layers as you add them to the map, so that only a subset of data is added. You can also select layers in Display Manager and filter the data after it is added to the map. You can filter a single layer or multiple layers at one time.

The result of a filter expression must be a Boolean value.