--- Elvis Dieguez <[EMAIL PROTECTED]> wrote:
> Thank you for your reply. For some inexplicable reason, I discovered that if
>
> I re-compiled the opendx code (before I was using pre-compiled rpms) then
> this error message no longer appeared and hardware rendering functioned. I am
> unsure what exactly was the problem but I do not believe it is because I was
> missing a component because even the sample programs did not function when I
> tried to turn on hardware rendering.
Odd.
> In reference to your question about my data set, I simply imported an ascii
> file where the data was in (x,y,z,data) column format. This was inefficient
> so I was looking for documentation on the DX format. Would you happen to
> know where I could find some?
Check out Appendix B in the User's Guide. An HTML copy off all the docs should
have been installed when you did a "make install". cd $PREFIX/dx/html (where
$PREFIX is /usr/local unless you specified otherwise during the build).
Alternatively, see www.opendx.org for PDF versions.
> Finally, (my apologies for bombarding you with a third question), but are
> there any good tutorials for dealing with scattered 3D data. That is what I
> am working with and I am having difficulty learning how I can do different
> things on the data. For example, how do I 'slice' the data or ask it to plot
> a (x,data) subsection? The 'slice' module seems to work only on gridded data.
No problem. Right, Slice & Slab just work on datasets with regular
connections. You can use Regrid to force your scatter data into a regular grid
if you'd like, but you might prefer to keep it as scattered data (if for no
other reason than memory conservation!).
For scatter data, use Mark/Compute/Include to do your "extraction" of subsets
of your data. For example, Mark("positions") -> Compute( "a.x" ) -> Include (
min=20, max=40 ) -> Unmark() -> repeat for data, would accomplish your (x,data)
subsection task I believe.
The Mark->Compute pair is a very powerful combination and a good DX trick to
have in your bag.
Randy
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