
From:  Hallgrímur Th . Björnsson 
Subject:  [Tftbhelp] finding the energy in a certain time and frequency interval in a TF plot 
Date:  Wed, 9 May 2007 22:50:15 +0200 
Hi. I am using the Time Frequency Toolbox in Matlab for my
Masters thesis. It is working very well and I have been using the Choi Williams
Distribution to great effect working on EEG signals. What I like to do is to find the total energy in a certain
part of the plot (for ex. All energy in 1012 Hz from time 0 to 1 sec). I have been trying to use integ2d.m to do this, but what
confuses me is how I interact with the TFR variable returned from tfrcw. How do
I only select a subspace of TFR? Thanks. 
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