Hi all, I am trying to rasterize/interpolate .las data only within predefined regions of a given .las file. For this purpose, I use the ENVI LiDAR Toolkit function 'Rasterize LiDAR data' and its check box options 'interpolate empty pixels' and 'use vector masks'. Unfortunately, the procedure stops (stop encountered: LIDARRASTERLAS) when specifying an .evf file containing several regions of interest in which the rasterization/interpolation should take place. Is the 'use vector mask' option the right approach for my specific task? If so, what could be potential sources of errors that cause the LiDAR toolkit to crash? And which method is implemented in the LiDAR toolkit to interpolate empty pixels in .las data? Any help on this problem would be highly appreciated. Kind regards, Christian