Finding an average of sample point in an array with irregular intervals
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Hi!
I would like to take an average of sample windows in my data.
(I1 = [1:10])
For regular intervals i could use the
Av1 = mean(I1([1:2:10;2:2:10]))
However, i am currently facing a problem where a gap between windows increases every time by 1 unit. Sort of like that:
Av2=mean(I2([1:(1:4):10;2:(1:4):10]))
How can i do it in Matlab?
2 Commenti
Risposte (1)
Omer Yasin Birey
il 23 Gen 2019
Modificato: Omer Yasin Birey
il 23 Gen 2019
Hi Pavel, you may try this
Av2 = cell(4,4);
% I2 = rand(20,20,20);
for i = 1:4
for j = 1:4
Av2{i,j}=mean([I2(1:i:10),I2(2:j:10)]);
end
end
meanWind = mean(cellfun(@(c) c, Av2(:)));
3 Commenti
Omer Yasin Birey
il 23 Gen 2019
Of course, it is possible. You are changing the columns here so I assumed you want to calculate the mean of columns. You can use the code below for mean of columns. Else if you want to take mean of rows use the second code.
Av2 = zeros(4,4);
% I2 = rand(20,20,20);
for i = 1:4
for j = 1:4
Av2(i,j)=mean([I2(1:i:10),I2(2:j:10)]);
end
end
meanOfEachColumns = mean(Av2',2);
if you want the mean of rows
Av2 = zeros(4,4);
% I2 = rand(20,20,20);
for i = 1:4
for j = 1:4
Av2(i,j)=mean([I2(1:i:10),I2(2:j:10)]);
end
end
meanOfEachColumns = mean(Av2,2);
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