Using Range Tables in Property Alteration Queries

Here is a relatively easy way to create a quick thematic map, based on Object Data, using a table of ranges in an Alter Properties Query.

My book "Digging Into AutoCAD Map 3D" shows you how to alter the properties of AutoCAD objects when querying them into a current drawing, based on object data values.

This tutorial takes it a step further, altering properties different ways, based on ranges of data. The tutorial begins with a drawing of line segments representing streets that was imported from a GIS Shapefile. An object data table was created during the import to contain the attribute data, which includes the speed limit of each street segment. From this, you'll learn how to quickly create a simple thematic map, with color-coded streets based on where the speed limits fall within two ranges: those 35 MPH and under, and those over 35 MPH.

The technique can be used with a wide variety of data, and applied to many common work-flow scenarios.

To learn more, (and access many tutorials for Map 3D), follow this link...

Using Range Tables in Property Alteration Queries