>Good morning, > >I am trying to resample a part of a field using the Grid and Map >modules but the interpolation takes a long time (e.g. Pick'ing a >single point and feeding its position to Map takes 10-15 seconds >on my Octane, 768Mb). > >The datasets I am working with are acquired from a 3D ultrasound >machine. The data from a 3D scan is stored in a block (average >size ~ 400x300x130 bytes). Each plane in this block is acquired >at a different angle. In order to describe the positions I use a >product array of a plane and a line. The line is a regulararray. >The plane is an array with the transformed positions according to >the angles. The connections are regular. What I have described is >the same as Example 6, Appendix B in the User's Guide, page 255), >only more points. > >Any advice on improving the interpolation performance? I am >scared to place a 10x10x10 grid somewhere in the dataset and do a >Map ;-) >
What are you seeing while Pick'ing? i.e. if you are drawing all those connections that must ugly; if you are drawing all those planes with some transparency that must be pretty slow. It is a large point set, so it may simply be that's the way things are going to be. If connections are in fact regular, why not use Slab to lop off a 20x20x20 section around where you want to do the 10x10x10 Map? If that doesn't speed things up, you have some other problem. Too little swap space maybe? Chris Pelkie Vice President/Scientific Visualization Producer Conceptual Reality Presentations, Inc. 30 West Meadow Drive Ithaca, NY 14850 [EMAIL PROTECTED]
