Re: [PyMOL] Trouble making pictures in a script

[EPF (E. P. Friis) <EP...@no...>]

Hi Michael

If the system is very big and causes the ray tracing to crash, try to
lower the hash_max setting. I think the default is 100. If the setting
is lower, it will be slower, but use less memory. (and vice versa :-)

All the best

Esben



> -----Original Message-----
> From: pym...@li...=20
> [mailto:pym...@li...] On Behalf=20
> Of DeLano Scientific
> Sent: 25. oktober 2007 18:11
> To: 'Michael Lerner'; 'pymol mailinglist'
> Subject: Re: [PyMOL] Trouble making pictures in a script
>=20
> Michael,
>=20
> The "-c" option forces PyMOL to run in command-line-only mode=20
> which means it doesn't have access to the OpenGL hardware=20
> (used by cmd.draw and interactive graphics).  In=20
> command-line-only mode, ray tracing (cmd.ray) is the only option.
>=20
> Cheers,
> Warren
> =20
> > -----Original Message-----
> > From: pym...@li...
> > [mailto:pym...@li...] On Behalf Of=20
> > Michael Lerner
> > Sent: Thursday, October 25, 2007 8:31 AM
> > To: pymol mailinglist
> > Subject: [PyMOL] Trouble making pictures in a script
> >=20
> > Hi,
> >=20
> > I have a Python script that sets a system up and then calls
> > cmd.png() to render an image. I use it to process several=20
> files at a=20
> > time, and there's no need to look at it while it's working, so I use
> >=20
> > pymol -qcr myscript.py
> >=20
> > to launch it. It works fine when I ray trace things, but if=20
> I just set=20
> > the system up and call cmd.png(), I get this error:
> >=20
> >  ScenePNG-WARNING: invalid context or no image.
> >=20
> > Calling cmd.draw() instead of cmd.ray() doesn't seem to fix things.
> > Any ideas? Some of the systems are big enough that=20
> cmd.ray() fails, so=20
> > I'd like to be able to find a workaround.
> >=20
> > Thanks,
> >=20
> > -michael
> >=20
> > --
> > Biophysics Graduate Student
> > Carlson Lab, University of Michigan
> > http://www.umich.edu/~mlerner
> >=20
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>=20
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