There are different conventions for the definition of Euler angles. This is one reason we try not to use Euler angles in Chimera. Perhaps Spider uses a different convention. Here's Chimera's convention. http://www.cgl.ucsf.edu/chimera/current/docs/ContributedSoftware/transform/t... Tom

Hi again,

I am having trouble trying to orient my map using the tools / movements / transform coordinates. My euler angles are an SPIDER output, but when I type them in Chimera they do not match my spider projections, any solution?

Thanks in advance,

Alex.

2010/4/21 Tom Goddard<goddard@cgl.ucsf.edu>:

...

Hi Alex,

The ability to position maps using Euler angles was just added so you have to get a Chimera "daily build" from the download page to use it. The menu entry will be

Tools / Movements / Transform Coordinates

without the word Molecule if you are using a recent daily build.

Tom

...

Dear all,

I would like to change the coordinates (Euler angles) for an EM density map (Tools --> Movements --> Transform molecule coordinates). But in the molecule scroll menu, my map does not appear. Is possible to define the system coordiantes for a EM density map?

Thanks in advance,

Alex.