2011

To filter point cloud data
1 In the Display Manager, right-click a point cloud layer and select Filter
Point Cloud.
2 In the
Filter Point Cloud dialog box (page 1900), in the Filter By drop-down
box, select one of the following filters:
■ Classification: if your point cloud data has been classified, you can
select which point classes to display. Shift-click or control-click to
select multiple classes.
■ Elevation: type the elevation ranges you want to display in your map.
Use hyphens to define ranges and commas to separate them; for
example, 150-200, 350-400, 1200-2000.
■ Intensity: you can use LiDAR intensity values to filter data. Use
hyphens to define ranges and commas to separate them; for example,
0.25-2.00, 3.50-4.00, 120.00-200.00.
■ Spatial: click the Locate on Map button to apply a spatial filter to your
point cloud. You can make a spatial selection using a circle, rectangle,
polygon, or proximity to an object on your map.
3 Click Apply Filter.
The filtered points are displayed in your map.
To create a new point cloud data store from filtered point cloud data
1 In the Display Manager, right-click the filtered point cloud layer from
which you want to create a new point cloud data store, then select Data
➤ Add Point Cloud Data ➤ Create New Index.
The
Point Cloud Manager (page 1897) appears with a row for your new
point cloud data store highlighted, and with the filter type displayed in
the Filter field.
NOTE You cannot create a new index from an AutoCAD point cloud index
(.PCG file).
2 In the Point Cloud Manager, select a file name and save location for your
new point cloud data store, then click Generate Index.
AutoCAD Map 3D begins to create the index file.
Filtering Point Cloud Data | 1025