CloudCompare forum

what is the zero and the growing direction of the dip(0-90) and the dip direction(0-360) in a point cloud?

If i recall correctly dip is the angle from the level. Direction is the angle of rotation around Z axis.

From the level upwards or downwards? And where is the zero of the calculated dip direction? North? South? East? I'm having some inconsistences in the dip and dip direction values and must know the origin of the angles to evaluate them.
Thanks for any help.

pmr wrote: ↑Wed Mar 20, 2024 7:42 pm From the level upwards or downwards? And where is the zero of the calculated dip direction? North? South? East? I'm having some inconsistences in the dip and dip direction values and must know the origin of the angles to evaluate them.
Thanks for any help.

You can play with edit -> plane -> create, but since dip is in the range of 0 to 90 it does not matter if it upside or downside. Zero is level 90 is vertical.

dip direction zero when a line/plane is on the x axis and it grows counterclockwise. I think.

Cloud compare does not understand north/east,south etc... it depends on your cloud's coordinate system.

- Dip direction is measured in 360 degrees, clockwise from North (North being +Y by default)
- Dip angle is always positive

Thanks a lot for your answers.