[chimerax-users] Question about "color sample" command

Sean Connell sean.connell at gmail.com
Sun Aug 18 02:15:36 PDT 2019


Hello I have a question about the "color sample" command
(Chimerax-daily version 0.91 2019-08-14) and its use in coloring a volume
based on the values of a second volume (i.e. local resolution maps from
relion)

The command works great when I load the volumes in to chimerx but after I
load them I want to transform them using matchmaker and the bring option so
that all the volumes I want to view are in a common frame of reference.
After I transform the volumes though if i re-issue the  "color sample"
command it seems to color the first volume according to the values in the
un-transformed second volume I am guessing?  Is this correct and expected
or am I just doing something wrong? if this is what is happening is there a
way to force color sample to read the transformed values or to re-sample
the transformed maps so they are correctly read?

Also the output of the color sample command reports the min,max and mean
values, just to confirm this corresponds to the values of all the voxels
displayed at the current threshold level right?

Finally is there a way to show a key for the coloring in chimerax?

Many thanks for any advice you can provide.

Sean
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