Dips > Sets > Add Sets

# Overlapping Set Windows

Set Windows are allowed to overlap in Dips.

If overlapping Set Windows have DIFFERENT Set ID:

- when Set Windows are overlapped and some poles fall within both windows, the affected data will be removed from the initial window and Set, and will become part of the latest window to be drawn.

- EACH DATA POINT CAN ONLY BELONG TO ONE SET AT A TIME!!!

- This allows the user to effectively remove data from Set Windows, by assigning a new Set ID to the overlapping window(s).

- All mean vectors are re-calculated each time a new window is drawn and any data transfers will change the affected means.

If overlapping Set Windows have the SAME Set ID:

- then poles which fall within both windows will only be counted ONCE in the mean vector calculation (i.e. this does not cause any problems).

Deleting Overlapping Set Windows

When Sets are deleted, the poles within the deleted Set Windows WILL NOT BELONG TO ANY SET. This is the case even if Set Windows overlap. Therefore it is possible to have poles within Set Windows which do NOT belong to any Set, if overlapping windows are deleted through the Edit Sets dialog. If this situation occurs, it is probably best to delete ALL Sets (Delete All Sets option) and start creating the Sets again, to avoid possible confusion.