I want to calculate the avearge power of each channels , condition and frequency band

Question

Shir Hartman 2023-5-2

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https://ww2.mathworks.cn/matlabcentral/answers/1956374-i-want-to-calculate-the-avearge-power-of-each-channels-condition-and-frequency-band

回答： Venkat Siddarth 2023-5-2

function test_spectra(spectra,pts,specfreqs,elcRegion)

avg_power=cell(length(elcRegion),6,2);

for i=1:length(elcRegion) %number of channals

for j=1:6 %condicion

for k=1:2 %band freqeuncy

for n=1:length(pts(:,1))

if pts(n,3)==j

sig_time=pts(n,3);

if pts(n,3)==1

rest_time=pts(n,3);

end

if k==1

avg_power(i,j,k)=bandpower(spectra(:,i,sig_time),1000,[12 30])/bandpower(spectra(:,i,rest_time),1000,[12 30]);

else

avg_power(i,j,k)=bandpower(spectra(:,i,sig_time),1000,[30 70])/bandpower(spectra(:,i,rest_time),1000,[30 70]);

end

figure()

histogram(avg_power(6,3,1),30)

end

this is the problam :

Conversion to cell from double is not possible.

thank you!!

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Answer 1

Venkat Siddarth 2023-5-2

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Hi @Shir Hartman,

I understand that you are facing an issue in converting double to cell.You can achieve this using a function called num2cell .

%In this we will try to convert a vector of doubles to cell array using num2cell function
numArray=[1.1 2.2 3.3]; %vector of doubles.
%converting to cell array using the num2cell function
cellArray=num2cell(numArray)
cellArray = 1×3 cell array
    {[1.1000]}    {[2.2000]}    {[3.3000]}