[Chimera-users] Spider to Brix

[Thomas Goddard]

Hi Batsal,

  Are the SPIDER and BRIX maps in Chimera related by some permutation of
the x, y, or z axes?  If there are a different number of grid points
reported by the Chimera volume viewer dialog along each axis then the
permutation should be apparent.  If the axes have the same number of
grid points, you might want to do a test with a map having different
numbers of grid points along each axis.

  What conversion program did you use.  I think this is most likely a
problem with that program.  But it could be a Chimera problem.  The SPIDER
format includes phi, theta, and gamma header values that specify a rotation
that the Chimera file reader ignores.

  Here is documentation on SPIDER file format

	http://www.wadsworth.org/spider_doc/spider/docs/image_doc.html

and here is documentation on BRIX format

	http://www.uoxray.uoregon.edu/tnt/manual/node104.html

  Let me know what you find out.

	Tom