From: wahn_at_uiuc.edu
Date: Tue Feb 06 2007 - 18:21:50 CST

Dear VMD users,

I tried to calculate gofr between calcium and oxygen.

In the tcl window, I typed the following command.

measure gofr {type CA} {type O}

This returned me that the first selection is invalid.
What is wrong in my expression?

Thanks for your help in advance.

Won-Young
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