As a result of the above topic, I have had another look at the Sastrugi node 
_Pointcloud Select Points in View and identified that there were deficiencies when dealing with different view types. I have revised the node to allow for better stability of point selection in 3D views, plan views, section views and detail views.
I have also removed the need for the box selection corner order, so users can now create a selection box from any corner, in any direction.
Also, I identified that there is a disconnect between the Active View plane refresh in 3D views that may cause the node to return a Null value. When a user rotates around the Pointcloud in 3D after entering the view, before starting the selection process with the node, the original view perspective normal is used to generate a selection box, not the perspective the user might end up drawing a region in.
This is a workflow issue, so I have included a “Troubleshooting” help message as a node “input” to alert users of the issue and what the workaround will be.
This update can be downloaded from my website for substitution into the latest package folder location. Sastrugi Website Downloads Page
Below are demonstrations for all view use cases.
Plan View Selection
Section View Selection
Detail View Selection
3D View Selection
3D View Selection (Active ViewPlane Issue)
