Finding the ratio of numbers in an array
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I access my array as:
data{1, i}(:,2)
So it is in the second column of data{1,i}
I have data in columns 3 and 4 already. I would like to make a column 5. I want column 5 to be the value in column 2 divided by the value in column 2 but 30 cells up. This means the first 30 values cannot be defined since we cannot compare to 30 cells prior. I keep trying this but I either get an array of zeros, or a single value. Can anyone help?
For instance, this does not work:
for j =31:1:1000
rois=data{1, i}(j,2)/data{1, i}(j-30,2)
end
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