The grid should be part of your velocity data. How are your velocity
vectors mapped in space? If you don't have them on a grid, this isn't
going to work.
If you need to specify your start position, in the Streamline cdb,
enter [x y] for the start input with x and y as your start position.
David
Thanks for your reply ...
I know that streamlines should not look exactly like the glyphs per
se, but what I meant was that the shape of the streamlines does not
seem to correspond to the computed velocity field, and since the
velocity field looks good, I conclude that I am screwing up the DX
stuff!
I think the problem is that I am not specifying the "START" data
component of the STREAMLINE module correctly. The default value for
this is "center of object" and given that, the one streamline I see
does make sense ... it starts at the center of the mesh, and
terminates at the boundary.
Seems like I somehow need to give the STREAMLINE module the grid
positions and I am not sure how to do that ... Anyone got an idea???
I tried specifying "positions", but that did not work.
Thanks,
Fred Phelan
At 08:01 AM 4/6/01 -0400, you wrote:
Can DX render streamlines from 2-D velocity data?
I am passing the velocity data through the sequence:
{velocity} -> STREAMLINE -> AUTOCOLOR -> IMAGE
But I get a very strange rendering that looks nothing like the
glyphs of the velocity field.
Also tried:
{velocity} -> STREAMLINE -> AUTOCOLOR -> ISOSURFACE -> IMAGE
But that gave an error!
Thanks,
>>Fred Phelan
>
--
.............................................................................
David L. Thompson The University of Montana
mailto:[EMAIL PROTECTED] Computer Science Department
http://www.cs.umt.edu/u/dthompsn Missoula, MT 59812
Work Phone : (406)257-8530
