From: Maryam (
Date: Mon Jan 31 2022 - 10:39:44 CST


I'd like to find the number of close contacts and contact areas for a
receptor-ligand interactions. I use the
source ContactFreq.tcl
in the TkConsole and then run
contactFreq "selection for protein" "selection for ligand"
but it gives me this error
atomselect: cannot parse selection text: selection for protein and noh and
within 4 of (selection for ligand and noh)
Is there a point I am missing?
Your help is appreciated.