[Liblas-devel] Can Liblas only update a small portion of the points in Lidar file?

[Hongwei Shen]

Hello,

The scenario is: the user opens a large Lidar file,  changes the
classification labels of a small number of points and save the changes
to the file.  When the Lidar file is huge, it is time-consuming to
output all the points. So it would be better if only the modified
points are updated in the Lidar file.  According to my understanding
now, Liblas needs to save  all the (changed and unchanged) points to a
new Lidar file. That's because Liblas can open a Lidar file either in
read-only mode or write-only mode, but not in read-write mode.

Do I understand correctly?  Is there a way to only update some points?

Thanks a lot,

Hongwei Shen
Software Engineer,  ERDAS, Intergraph