AMBER: density profiles in ptraj or carnal

From: Hwankyu Lee <>
Date: Sun, 29 May 2005 23:27:37 -0400

Dear Amber-users,

I have some questions about analysis by using ptraj and carnal.

1) I would like to see the graph of mass densities or electron
densities of some solutes and solvent across the system box (distance).
I searched ptraj or carnal for this analysis, but couldn't find that.
How can I measure that by using ptraj or carnal?

2) I know that I can measure moment of inertia by using carnal
(groupid%momin). But, I'm wondering if I can do that in ptraj. How can
I measure moment of inertia by using ptraj?

3) When I use ptraj, I know that I can specify analysis intervals by
doing "trajin *** 100 200 1" (from 100ps to 200ps). But, how can I
specify analysis intervals in CARNAL?

Thanks for your help in advance.


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Received on Mon May 30 2005 - 04:53:02 PDT
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