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RasMol FAQ (Frequently Asked Questions) - A
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(Continued from previous part...)
As mentioned above RasMol's resolution limitations are currently being
removed by four approaches:
- Support for high resolution output images (at x4 screen resolution).
- The ability to have large resolutions in UNIX command-line only mode.
- Vector PostScript support for all RasMol representations.
- Export of model file formats (including POV, Raster3D, DXF and VRML) to
other rendering programs such as photo-realistic ray-tracers.
Generating RasMol animations non-interactively in UNIX
The inability to use the save and write commands
in a RasMol script file is a deliberate security feature.
There was a concern about the security of using RasMol on the Internet
when researchers started e-mailing and FTPing 'untrusted' script files
between sites. This was especially true of sites that have configured
Netscape to fire up RasMol with a RasMol script file MIME type.
Such a script, executed with "rasmol -script <filename>"
may potentially overwrite system and user files, for example creating
a "~/.rhosts" file on the remote machine. To defend against
this threat I decided to disable the save and write
command from within RasMol, unless the command "set write true"
had been entered interactively on the command line.
The solution to the problem is to run your scripts with:
rasmol -nodisplay <pdbfile> < <scriptfile>
or
cat <scriptfile> | rasmol -nodisplay <pdbfile>
i.e. pipe the commands into stdin, RasMol can't tell that these haven't
been generated interactively and allows save and write
commands.
Is there an Acorn Archimedes version of RasMol?
Note: all known versions of RasMol for different operating systems,
including Acorn RISC, are available through the
Getting RasMol page.
The Acorn Archimedes (ARM) version of RasMol has been ported by Martin
Wuerthner at the University of Stuttgart,
"wuerthne@trick.informatik.uni-stuttgart.de".
The Archimedes distribution is available at the following sites:
HENSA (difficult to reach for users from outside the UK):
micros.hensa.ac.uk (in /micros/arch/riscos/e/e089/rasmol.arc),
the University of Kaiserlautern (Germany):
ftp.uni-kl.de (in /pub/acorn/long/science/chemistry/rasmol.arc),
and the University of Stuttgart (Germany):
ftp.uni-stuttgart.de (in /pub/systems/acorn/riscos/etc/rasmol110.spk).
The first RISC OS release (1.10) of RasMol has the following features in
addition to those of the X version:
- runs on all Acorn 32-bit RISC computers under RISC OS 3.1 or higher,
supports all display depths up to 24 bpp, just about runs on a 2MB machine
- fully supports RISC OS cooperative multitasking even while rendering
the image
- Floyd-Steinberg colour dithering for 16 and 256 colour modes
- support of both the RasMol mouse mode and a more RISC OS-like way using
a tool bar with rotation/translation/slabbing etc. tools
- extended menu structure (e.g. sub-menus to enter parameters for display
options)
- exports native RISC OS bitmap format, RISC OS drag-and-drop support
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