This sample code shows how to create an ENVI LiDAR extension that annotates the highest point of a LiDAR dataset. To run this extension requires ENVI LiDAR and a full IDL license.

Use the sample code to become familiar with extensions. This sample provides information on how to:

• Open the current or a new ENVI LiDAR session.
• Create and use a LiDAR point filter.
• Query a rectangular area of the LiDAR data with the LiDAR point filter.
• Annotate the highest point of a LiDAR dataset.

View the Sample Code

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1. Start ENVI LiDAR.
2. In the Toolbox, select Samples.
3. Right-click Annotate Highest Point and select Debug.

Note: If the extension is not visible in the Toolbox, verify you have a full IDL license.

Run the Sample Code

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Use one of the following to run the sample code:

• On the IDL workbench toolbar, click Compile, then click Run.
• In ENVI LiDAR double-click the Annotate Highest Point extension in the Toolbox

Note: Depending on your user account privileges, you may not be able to save changes to the sample extensions. Refer to Deploy Extensions for information on copying the samples to a user-writeable location.