Drag zoomed in LiDAR data in RGL window

[Saadi4469]

In some softwares the user can hold down the middle mouse button to drag the visual data. How can this be done while correcting the tree tops identified in a zoomed in view?

TTops.manual = find_trees(LAS_denoised, manual(LAS_TTops))

[Jean-Romain]

Good question. I did not use this function for years but if I remember well you identify the trees with the right button, and the right button is also associated to the drag event. So, I guess drag action is overwritten by the selection action. The reason is that manual() was existing before the 3D rendering in lidR supports the drag action.

I guess I could put the selection with the middle button to keep the drag action.

[Jean-Romain]

Which version of the package are you using ? It seems that the function no longer works... I don't know why.

[Jean-Romain]

I fixed the error. I'd like to know which version of lidR and rgl were in use on your computer because the bug I experienced was not existing before and I did not change the function for years. So I suspect an slight modification in rgl itself.

Also the default button for selection is now the middle button. This automatically enabled the right button that is the default for panning in lidR.

Thank for reporting

[Saadi4469]

I am using the latest version of lidR ver. 3.1.3 and rgl ver. 0.106.8 available on CRAN. And I still have to use the right mouse button to add or flag tree tops, and the middle mouse button stretches the view.

[Jean-Romain]

Yes of course. You must install the latest version from github. It is not yet on CRAN

[Saadi4469]

for both lidR and rgl, or just lidR?

[Jean-Romain]

Just lidR.This is the only source code I can update. I've no control on rgl.

[Saadi4469]

Yes, the drag function works now thank you and cheers on fixing the error.