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From: Putrisia Hendra on 3 Aug 2010 23:53
hiRoger..
actually i just want to ask you about AVGPOWER in Matlab..
this function tell us about average power a signal.
so, if we want to use that function in GUI how we can do that? i mean what should we d first?
i have some code:

% compute the power spectrum, telling the FFT to use length(x) as the number of
%points in the FFT, and to use the sampling frequency 256Hz.
[P,f] = periodogram(x2,[],length(x2),256);
%the function returns a vector of frequencies at which the FFT was computed, f,
%and the power at each frequency, P.


temp_1((1:15386),1)=P;
temp_1((1:15386),2)=f;
delta=[temp_1((1:8),1) temp_1((1:8),2)];
theta=[temp_1((9:16),1) temp_1((9:16),2)];
alpha=[temp_1((17:24),1) temp_1((17:24),2)];
beta=[temp_1((25:40),1) temp_1((25:40),2)];
delta=sortrows(delta);
alpha=sortrows(alpha);
beta=sortrows(beta);
theta=sortrows(theta);

d=avgpower(delta)

set(handles.delta,'String',d)
guidata(hObject,handles)

avgpower is doent work here..

are there any solution bout my code?
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