Searching for good vis. software

[kmsahr at happy.colorado.edu]

     I'm new to the net so I'll bet this topic has been 
addressed before, but here goes... We just got an SGI 
4D/340VGX and we need a program for graphing and data 
visualization. Ideally, we'd like a program with these 
features:

     1. Ability to do a wide variety of plots, from simple 2D 
histograms up to large 3D contour and surface plots.

     2. Easy to use; our previous experience with plotting 
programs is on Macintoshes. Plotting programs there are very 
user-friendly but not very powerful...

     3. Able to run from the console, X-terminals, and 
Tektronix terminals.

     4. Able to create contour and surface plots from random 
data (i.e., data that doesn't lie on a regular X-Y grid).

     5. Allows us to freely add labels, text, etc. to the 
finished plot using Mac-like drawing tools.

     Any input on existing packages of a general nature 
(positive and/or negative) would also be much appreciated. 
Post or email is fine, if there are lots of email responses 
I'll compile and post.

Thanks in advance.

Kevin Sahr
Kaman Sciences Corp
sahr at uhclem.colorado.edu