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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
I want to be able to quickly prototype software that will draw 2D graphs, histograms, etc. Sounds (and looks) like VisAD is what I need. I don't know much about 3D graphics though, and have no need for them right now. The docs for VisAD say that I can do things in 2D, and that I only need java3d if I want 3D graphics (at least that's how I understood it). But I'm finding that even a simple jython script wants java3d:
from graph import *
a=[0, 7, 10, 8, 6, 4, 2, 1, 0]
b = field(a) # Is this the right thing to do?
histogram(b,40)
gives this error message
Traceback (innermost last):
File "/d0/home/fgibbons/cvs/VisAD/quick_graph.py", line 6, in ?
File "/d0/home/fgibbons/cvs/VisAD/./graph.py", line 62, in histogram
java.lang.NoClassDefFoundError: javax/media/j3d/Behavior
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:493)
I've gone to Blackdown's page, checked out the docs for Mesa3d, etc, and to
be honest it scares me - I don't want to know about hardware! Is there any
way that I can use VisAD without installing java3d?
If I could play around with VisAD for a week or two, and can convince myself that it's really what I need, I might even invest the time in java3d (the images are so cool - I'm sure I could find a way to use them in my work!).
I did find one message from 1999 (http://www.unidata.ucar.edu/staff/russ/visad/msg09429.html) discussing building VisAD without java3d, but the solution seems to be adding jars from 3d? I don't understand this, perhaps someone who has used this trick could elaborate?
On the other hand, maybe VisAD is overkill for what I want to do (it sure looks good though).
Thanks for your help. I'm blown away by VisAD's capabilities, especially when hooked up to Jython!
Frank Gibbons PhD, Computational Biologist, Harvard Medical School BCMP/SGM-322, 250 Longwood Ave, Boston MA 02115, USA.Tel: 617-432-3555 Fax: 617-432-3557 http://llama.med.harvard.edu/~fgibbons
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