From: Jianhui Tian (
Date: Thu Mar 15 2007 - 16:16:21 CDT


I want to export the ramachandran data for all the protein residues and plot
all the (phi, psi) angles over the trajectory in one plot rather than one
plot per residue using "print to file". How to do that? Or what's the code
for calculating the phi psi angle if you know the four backbones atoms?