steve@wrc.unr.edu (10/19/90)
Does anybody know of, or have a simple GL program that will take, as input, a file that looks like: x1 y1 z1 x2 y2 z2 . . . xn yn zn where z = f(x,y), that is, z is the height of some dependent variable at the point (x,y)? Please note that it would be ok if the solution required regularly gridded (i.e. even spacing in x,y) data points; I have programs will provide the regularly gridded data, even if the original data are irregularly spaced. I'm thinking of something that would work more or less like the SGI demo program wave, where you could manipulate the surface in real time, perhaps even changing lighting models from menus, as in the SGI flip demo. Yes, I have NCSA's hcvis, and I am on the list to receive apE 2.0. NCSA's hcvis requires formatting the data in their hdf format; a daunting task for a beginner who just wants to plot some simple x,y,z data; moreover it has a static display (no real time manipulation of the displayed surface). apE 2.0 may do what I want, but I don't know yet. It also has a required data format (flux format), and will undoubtedly require a fair amount of initial effort to just get to the point to do what I want. The simplest solution (it seems to me) would be a program that would turn the (x,y,z) data into the polygonal data format needed by flip, or perhaps a simple modifcation of the wave demo program. Please note that I'm new to the SGI world; I've had my PI 4D-25TG only a couple of weeks. I regularly program in fortran, and have started programming more recently in c. I plan to take the GL course one of these days, but it would sure be nice if someone out there has already done what I'm thinking of. I will summarize useful information sent directly to me in a follow up posting, if you want to save bandwidth. Thanks in advance for your help. Steve Wheatcraft Internet: steve@olympus.wrc.unr.edu Desert Research Institute Bitnet : steve@unsvax.bitnet University of Nevada System P.O. Box 60220 AT&T : (702) 673-7393 Reno, NV 89506 FAX : (702) 673-7397
drb@eecg.toronto.edu (David R. Blythe) (10/22/90)
In article <4790@tahoe.unr.edu> steve@wrc.unr.edu () writes: >Does anybody know of, or have a simple GL program that >will take, as input, a file that looks like: > >x1 y1 z1 >x2 y2 z2 >. >. >. >xn yn zn > >where z = f(x,y), that is, z is the height of some >dependent variable at the point (x,y)? You might try IRISPLOT which was available via ftp from connemara.math.arizona.edu (128.196.224.5). I don't know if it is still available. -drb