Using a for loop to extract values from a matrix
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Hello!
I have a 5x12 matrix. The purpose of the matrix is to show different temperatures during every month of a year in 5 different cities
A = [ 1 2 3 4 5 6 7 8 9 10 11 12 ; 1 2 3 4 5 6 7 8 9 10 11 12 ; 1 2 3 ... an so on]
Now what I want to do is "seperate" temperatures that are under a certain degree, for example if the temperature drops under 4 degrees celsius i want this to be displayed in the command window.
I should showcase temperatures of 1 2 3 for all the 5 cities.
I tried something like this:
for i = A(1:end)
if i < 4
disp('To cold')
end
end
I do not resive any error messages, but nothing happens, at all. It's obvious my MatLab skills are non existant so I'd really appriciate the help!!
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Antworten (1)
Cris LaPierre
am 7 Mai 2021
Typically this is done using your loop counter to index into your vector.
You can learn more about indexing in Ch 5 of MATLAB Onramp. Of course, you will need to set up your for loop correctly so that the loop counter is meaningful. See Ch 13 for that.
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