Does some function e.g. fastPointMetrics produce sum of vertical "pillars" of voxels to form a "kind of CHM"?

tiagodc / TreeLS

R functions for processing individual tree TLS point clouds

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Does some function e.g. fastPointMetrics produce sum of vertical "pillars" of voxels to form a "kind of CHM"? #44

Open mavavilj opened 3 years ago

mavavilj commented 3 years ago

Does some function e.g. fastPointMetrics produce sum of vertical "pillars" of voxels to form a "kind of CHM"?

I.e. it calculates how many filled voxels there are along z-axis for each x-y -axis rectangle.

spokswinski commented 3 years ago

We make a "kind of CHM" by using the grid_canopy funtion in lidR after normalization and voxelization, but that just gives us a raster with heights, not how many voxels in a column.