Extracting data from excel file; Adding a new column; plotting the first and the newly added column

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Ali Awada
Ali Awada el 16 de Oct. de 2020
Comentada: Ameer Hamza el 16 de Oct. de 2020
Hello,
Can someone please help with the following code:
I need to import data from an excel file(9600x2). Then i need to add a new column such that the new column is equal to the value in the second column minus the mean of the entire second column.
At the end i want to plot the 3rd column values versus the 1st column values.
Thank you in advance

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Ameer Hamza
Ameer Hamza el 16 de Oct. de 2020
Something like this
M = readmatrix('sample.xlsx');
M = [M, M(:,2)-mean(M(:,2))];
plot(M(:,1), M(:,3))

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