On Thu, 4 Jun 2015 14:36:02 -0500 Evgeniya Khakhalova <[email protected]> wrote:
> To obtain the intersect of two masks I used Data Process-> Mark with-> > Intersect masks. > Is the result would be the same if I'd have used multidata arithmetic > as you suggested? No problem here. The mask in general is similar to the image, where "1" is mask and "0" corresponds to no mask regions. So mask intersection or multiplication of two masks in multidata arithmetic should give the similar results. > And also when I use Statistical quantities for marked region it gives > me Surface area and Projected area. Do you know what is the > difference between those two and why the surface area is N.A. for > magnetic images (NapPhaseRetrace)? David is already answered. The surface area is area on 3D polygonal surface (if XY and Z units are the same, else it will not be calculated as meaningless), the projected area is the area of projection on XY plane. WBR, Daniil Bratashov. ------------------------------------------------------------------------------ _______________________________________________ Gwyddion-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/gwyddion-users
