actually my problem is that i have a channel and a ccp4 map of this channel. now i want to see residue lining the channel (around 3.2 A of channel or map) and not anything else. how ever this methods is selecting everything outside channel. how can i restrict this selection to only 3.2 A of map or channel.

On 9/7/07, Tom Goddard <goddard@cgl.ucsf.edu> wrote:

Hi Dhiraj,

You can select just the atoms in a map with some Chimera black magic.
There is a keyboard shortcut "oa" that restricts the currently selected
set of atoms to those that are above the threshold level of the volume
data set shown in the volume dialog. If you start by selecting all
atoms (menu Select / Select All or shortcut "sa") then use "oa" then you
have the atoms outside the map selected, then invert the selection (menu
Select / Invert or shortcut "is"). These Chimera shortcuts need to be
enabled using menu entry Tools / General Controls / Accelerators On, and
then you can type the two letter key sequences into the main Chimera window.

Here's a list of other shortcuts.

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

Tom