The possibly simplest and least effective approach is to store whole
3+1D data from the simulation to a HDF5 file. One has to be careful
that the file may grow really big (gigabytes...).
After running the simulation, one can export the animated data using
the e. g. similar commands (on Linux with Imagemagick installed):
rm *png
h5topng -x 13 -t 0:359 -R -Zc dkbluered -a yarg MYFILE.h5
convert -delay 2 *png slice_x13.gif
In this case, the command specifies the 13th slice of X, producing Y-Z
slices. With time going through all 360 slices, we create 360
consecutive PNG images and the last command creates an animated GIF
file.
Note that with this approach the file size grows with fourth power of
resolution! For higher resolutions it is advisable to save only the
slices we want, specifying a 2D volume in the meep time stepping
routine. I am using Python-MEEP, but scheme version should be similar:
(...)
ex_YZ_file = prepareHDF5File("ex_YZ.h5")
while (f.time() < (f.last_source_time()*2):
f.step()
f.output_hdf5(Ex,
volume(vec(size_x/2, 0., 0.), vec(size_x/2, size_y, size_z)),
ex_YZ_file, 1)
Best regards,
Filip
2012/8/31, Chiraag Nataraj <[email protected]>:
> Hey guys!
>
> I'm trying to figure out exactly how 3D stuff works with respect to the
> post-processing. Yeah, MEEP does the 3D simulation and all, but where do
> you go from there? I'm not exactly sure how you're supposed to use the
> data given by MEEP.
>
> Thanks in advance!
>
> Sincerely,
>
> Chiraag
>
>> Hey guys!
>>
>> Sorry for spamming the list, but as I was playing around just now, I also
>> couldn't understand exactly how the slices work when you render a 3D
>> object in MEEP. MEEP is fine with it, parses it, and comes up with the
>> H5
>> files. However, I'm trying to figure out exactly how the slices work.
>>
>> Any help would be appreciated.
>>
>> Thanks in advance!
>>
>> - Chiraag
>>
>>
>> _______________________________________________
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>>
>
>
>
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