Hi Hector,

Not sure what "sharply chopped" means without a picture. But we have seen a problem where the map surface looks like sliced bread. It is caused by a bug in old Mesa OpenGL (3-d graphics) libraries on Linux, and is not a Chimera bug. The solution is to install a graphics driver which will also give you much faster rendering. Or you can disable Vertex Buffer Objects in the Chimera Debug Graphics Driver tool.

http://plato.cgl.ucsf.edu/trac/chimera/ticket/7201

http://www.cgl.ucsf.edu/chimera/docs/ContributedSoftware/debug/debug.html

If this is not your problem you can submit a bug report with Chimera menu entry Help / Report a Bug and attach an image.

Tom

Hi,

Also regarding contouring ED maps: we have ccp4 maps that are fine in coot, but as soon as you display them in chimera they are sharply chopped in one direction, as if there is any problem with a border. Any suggestion, the effect it's particularly bad for a surface representation, but it's also obvious when you display it as a mesh.

Thank you!

Hector Viadiu