Hi Pymol Users,
I have a problem drawing maps, and can't seem to find the solution online,
so thought I'd ask here.
I'm drawing a mesh based on a ccp4 map exported from coot. To get finer
sampling, I use the map_double command (twice sequentially, but the problem
is visible after the first). Doubling the map introduces a discontinuity.
The second doubling introduces a gap, but even even the first has a visible
distortion. (see linked images below)
This discontinuity lines up with the unit cell boundary, so it has
something to do with sampling at the unit cell edge (the cell boundary is
faintly visible in the background of the linked images). Not sure if
there's a simple fix I'm overlooking or if it's a fundamental limitation of
the sampling algorithm. Any help you can provide would be great!
I've linked images of the same map at all 3 samplings below:
Parent map: http://imgur.com/i46YH6r
Doubled once: http://imgur.com/Vy8oJfx
Doubled twice: http://imgur.com/q3gO0cI
Thanks!
Shane Caldwell
McGill University
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