Delete class

Requires a LP360 Drone, LP360 Geospatial or LP360 Land Standard license. 

Delete Classes removes points of the classes you select from one or more LAS layers. Those points are taken out of the LAS files. Classes you leave unchecked stay in the files, in their original class.

Open Delete Classes from the Classification tab or the AI Classification tab, in the Cleanup Tools group. The same command is also on the Tools tab, in the General group.

1. LAS Layers

The first page of the Delete Classes wizard (Figure 1) is used to select the LAS layers to process.

The active LAS layer is checked when the dialog opens. Check any additional layers to process with the same class selection. Select all and Clear all are above the list.

 
Only LAS layers are listed. If the map has none, the list says “No LAS Layers found.”

2. Classes

The second page of the Delete Classes wizard (Figure 2) is used to choose which classes to remove.

Check the classes to remove. Unchecked classes are kept. The same classes are removed from every LAS layer selected on the first page.

The list shows classes 0 through 255, with the standard class name. Custom class names configured in LP360 are shown when they exist. The list is not limited to classes that contain points. Checking a class that has no points removes nothing for that class.

Select all and Clear all are above the list.

3. Output

The third page of the Delete Classes wizard (Figure 3) is used to choose whether to replace the input layers or create new layers.

Overwrite Input LAS Layer(s)

Selected by default. Replaces the original LAS files with files that no longer contain the checked classes. Append and Output Folder are not used.

Before the files are replaced, confirm the overwrite. The original files are changed on disk. This cannot be undone from the dialog.

A file that has no points left is removed from the layer. If every file in a layer would be empty, that layer is not changed.

Create new LAS Layers and append name with

Leaves the original layers unchanged and adds new LAS layers to the map.

  
Each new layer is written in its own folder under the output folder, using the new layer name. Example: layer Flight1 and append _NoGround creates LAS\DeleteClass\Flight1_NoGround.

Suggested append text:

    
If a layer with the new name is already on the map, or the destination folder already contains LAS files, confirm whether to overwrite that existing output.

Submit to Job Manager

Off by default. When checked, one job is submitted for each selected LAS layer. The jobs run one after another. The map is not updated until Complete is selected in Job Manager.

How to Delete Classes

1. On the Classification tab or the AI Classification tab, in Cleanup Tools, select Delete Classes. The same command is on the Tools tab, in General.
2. On LAS Layers, check the LAS layers to process. The active LAS layer is already checked.
3. Select Next.
4. On Classes, check the classes to remove. Leave at least one class unchecked.
5. Select Next.
6. On Output, choose how to save the result.
   • Select Overwrite Input LAS Layer(s) to replace the original files.
   • Select Create new LAS Layers and append name with to keep the original layers. Review Append and Output Folder.
7. Leave Submit to Job Manager unchecked to run immediately, or check it to queue the work.
8. Select Submit.
9. If overwrite is selected, confirm that the original LAS files should be replaced.
10. Finish the run.
    • Immediate processing shows progress for each layer. When it finishes, the message is “Delete Classes completed successfully.”
    • Job Manager processing queues one job per layer. When processing finishes, select Complete in Job Manager to update the map. Overwrite updates the existing layer. Create new adds the new layer.