QSM To Ground Extrapolation with imported DTM problem

Andreas Luka · 02-26-2022, 04:42 PM

I am able to extrapolate the QSM to the ground when I compute the DTM (ground point classification, ground filter, Dtm pyramidal Mlesac Fit), segmentations and QSM in consecutive steps.
I couldn't get it the step activate, when I imported the DTM (we have cleaner data from field survey) and SF QSM. Any thoughts what I may missed out?

***SimpleForest*** · 02-26-2022, 07:11 PM

(02-26-2022, 04:42 PM)Andreas Luka Wrote: I am able to extrapolate the QSM to the ground when I compute the DTM (ground point classification, ground filter, Dtm pyramidal Mlesac Fit), segmentations and QSM in consecutive steps.
I couldn't get it the step activate, when I imported the DTM (we have cleaner data from field survey) and SF QSM. Any thoughts what I may missed out?

It is a bit tricky to explain, but there can be different types of data:

* PointClouds
* DTM
* QSM

Each of those data types is embedded in what we call in CT a group. A group can by AnyGroup or RoutGroup.

Groups and Data have to be specified in the code. So the placement of the data is specified. This placement is different in your import case.

I think I have a hard time atm developing, even if this is only a small change. I dont have a compilable code base at my computer right now and am super busy with other stuff. I will give it a try as soon as possible, but I have more important tasks in my life right now Sad

. But maybe I can make it work.

You should upload an example script, at best one cloud and dtm as well, but please externally. I do not have much webspace here, and I would have to pay for more myself. Then link this to me and I can try as I said before.