Exercise: Introduction to LidR

Data acquisition

Please download “Lidar Data Lahntal” from the Ilias course directory “data” and save it in your project structure. It may be advisable to create a subdirectory in your data folder for all the upcoming LiDAR processing.

LidR

• If not already done, install the lidR package
• Load the Lahntal LiDAR data into R

Visual data exploration

• Plot the LiDAR data
• Plot the LiDAR data again, but experiment with different columns for the coloring of the points
• What information could you gain from these plots?

Attribute Filter

• Filter the LiDAR data. Only keep points above an intensity value of 300
• Plot them. What points are these? What could you do with those points?
• Filter the LiDAR data. Only keep points which belong to the classification “2”
• Plot them. What points are these? What could you do with those points?