Position of georeferenced model on ground plane grid
I have a suspicion that I need to be confirmed:
I always assumed that the grid displayed as the ground plane has a fixed position in relation to a georeferenced model.
Then I noticed that after re-running alignment with a georeferenced laserscan, the model has shifted significantly on the world grid and also in relation to the 3D viewport.
A CP that I added does not change it's coordinates to any meaningful extent.
Is my presumption correct that the displayed position of the model on the world grid is arbitrary?
I always assumed that the grid displayed as the ground plane has a fixed position in relation to a georeferenced model.
Then I noticed that after re-running alignment with a georeferenced laserscan, the model has shifted significantly on the world grid and also in relation to the 3D viewport.
A CP that I added does not change it's coordinates to any meaningful extent.
Is my presumption correct that the displayed position of the model on the world grid is arbitrary?
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are you looking for a workflow to get everything in and out at the same location?
you should set project/output to world-co-ordinates.
work out what x,y offset you need to re-zero it. and then save this in a text doc.
I've found this to work quite well. keeping everything the same over quite a few different projects in the same area. -
Hey chris,
in most cases I work with geo-referenced models, either by theodolite or laserscan.
So the absolute position is not an issue, even going back and forth between different programs.
I only want to be able to compare models in-program by switching between components.
Often it is fine, but sometimes there is a significant shift.
It does NOT concern absolute coordinates but the RELATIVE position on the grid and in relation to the viewport.
I find that really weird and unintuitive.
Might open a bug-report about this...
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