from the Classification toolbar or the Profile Window .
Within the classification filter property page, you may turn on or off (checked and unchecked, respectively) any combination of classification values to achieve the desired set of points to return from the LAS files. A custom set may contain some of the same classification values as a predefined filter but differ in at least one classification value.
Learn more about predefined classification filters
1. Open the Selection/Source Filter dialog
box by clicking the button
from the Classification toolbar or the Profile Window .
2. Click the Filter tab and then the Classification tab.
3. To turn a class on, click in an unchecked check box on the class name and value item you wish to turn on or include in the filter.
4. To turn a class off, click in a checked check box on the class name and value item you wish to turn off or exclude from the filter.