Issue of Rasterize tool in the latest version and suggestion on CHM
Posted: Mon Jan 04, 2021 11:15 am
Hi Daniel,
first of all many thanks for this amazing software which I know from few months but it already helped me a lot with my research.
During some tests aimed at producing a Canopy Height model from UAS-based point cloud I noticed an issue in the latest version of Cloud compare(2.12) with the rasterize tool. I suppose that is a problem because making the same steps in CC v. 9.2 all worked like a charm.
In particular, I Used CSF filter to classify my point cloud in ground points ad off grounds points and to create a cloth mesh (which seems to me something similar to bare earth DTM). Successively, I sampled 2000000 of points on the cloth mesh and I used this new point cloud to compute 2.5 Volume with off-ground points. I got another point cloud with scalar field represented by relative height of trees as you can see in the attached image (https://drive.google.com/file/d/1_U_qwi ... sp=sharing). First of all, could I ask you if you deem appropriate such method to achieve this task ? I am new to such things so any suggestion is more then welcome :-).
Now, the real odd thing: when I export as geotiff my output (choosing relative height as active layer in the grid option) I get always only a geotiff with height grids and no the relative heights (trees heights, in my case from 0 to 11.2 m) as you can see by the value read in ArcGis.
https://drive.google.com/file/d/1HpcFY_ ... sp=sharing
Moreover if I try to select "active layer" in the raster export option panel nothing is created.
Do you have some suggestion or it is preferable for now that I return to old version ?
Many thanks and all the best for this new year.
Daniele
first of all many thanks for this amazing software which I know from few months but it already helped me a lot with my research.
During some tests aimed at producing a Canopy Height model from UAS-based point cloud I noticed an issue in the latest version of Cloud compare(2.12) with the rasterize tool. I suppose that is a problem because making the same steps in CC v. 9.2 all worked like a charm.
In particular, I Used CSF filter to classify my point cloud in ground points ad off grounds points and to create a cloth mesh (which seems to me something similar to bare earth DTM). Successively, I sampled 2000000 of points on the cloth mesh and I used this new point cloud to compute 2.5 Volume with off-ground points. I got another point cloud with scalar field represented by relative height of trees as you can see in the attached image (https://drive.google.com/file/d/1_U_qwi ... sp=sharing). First of all, could I ask you if you deem appropriate such method to achieve this task ? I am new to such things so any suggestion is more then welcome :-).
Now, the real odd thing: when I export as geotiff my output (choosing relative height as active layer in the grid option) I get always only a geotiff with height grids and no the relative heights (trees heights, in my case from 0 to 11.2 m) as you can see by the value read in ArcGis.
https://drive.google.com/file/d/1HpcFY_ ... sp=sharing
Moreover if I try to select "active layer" in the raster export option panel nothing is created.
Do you have some suggestion or it is preferable for now that I return to old version ?
Many thanks and all the best for this new year.
Daniele