DX is pretty good at creating test data algorithmically. Using (among
other modules) Construct, Compute, Replace, Refine you can create a lot of
different things, varying resolution, frequency, grid type - and you know
what you are creating, making testing easier. For example:
a = Compute([-1 -1 -1], [.1 .1 .1], [21 21 21]);
b = Replace(a, a, "positions", "data");
c = Compute("[-$0.x, $0.y, 0.1]", b);
creates a helical vector field on a regular grid. You can make it
irregular by
d = Mark(c, "positions");
e = Compute("$0", d); - or some function transforming the vertices
f = Unmark(e, "positions");
Or a tetrahedral grid by
d = Refine(c, "tetrahedra");
Greg
Platis Nikos
<[EMAIL PROTECTED]> To:
[email protected]
Sent by: cc:
[EMAIL PROTECTED] Subject: [opendx-users] 3D
vector field datasets
son.ibm.com
04/19/2003 10:51 AM
Please respond to
opendx-users
I am looking for (connected) 3D vector fields to test some algorithms that
I am developing. I have already obtained the "bluntfin" and "SSLV"
datasets from NASA and the DX BonusPak, but I have not been able to find
any other freely available datasets on the Web.
Could anyone point me to sites containing such data? Any help would be
greatly appreciated.
Nikos Platis
--
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Nikos Platis e-mail: [EMAIL PROTECTED]
Department of Informatics tel: +30 210-727-5102
University of Athens fax: +30 210-727-5114
"The empires of the future are the empires of the mind." - W. Churchill
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- [opendx-users] 3D vector field datasets Platis Nikos
- Re: [opendx-users] 3D vector field datasets Gregory D Abram
