MATLAB FOR LOOP INCREMENT CODE

some will increase some will not change and some will decrease. MATLAB: Control Structures- loops kstart:increment:end (if the increment is not specified is taken as 1) No need for brackets plays the role of the bracket. If I understand correctly what you want to do, to start the loop from 40 and count down, just change the beginning loop index: for i 41:-1:2 To start at ‘N’, the loop index has to start at N+1 and stop at 2 because of the way the indexing works. What i would like to do is plot a histogram of each mass by giving it a range for background and a range for afterwards and subtracting the average intensities of these ranges to give something like this: the value in row 1 is scan 1 for mass 38, second row is scan 1 mass 39, row 170 is scan 2 of mass 38, row 171 is scan 2 of mass 39 and so on. From your question, for (int i 0 i < 1000 i+25) generates a list of the numbers 0 25. This matches an intensity value for the respective mass i.e. The form start:end assumes a step of 1, whereas you want a step (or increment) of 25, so use the second form. here's what the file looks like once i open it with mzcdfread Īs you can see there are 39603 entries for mass_values and the same amount for intensity_values.įor the specific file the masses range from 38-200 (every integer in that range) so the 39603 is 38.200 repeating. values has one of the following forms: initVal:endVal Increment the index variable from initVal to endVal by 1, and repeat execution of statements until index is greater than endVal. Each with a different range of masses, times and intensities.Ģ-4) The file is a raw data file of an online (sampling continuously) mass spec. Description example for index values, statements, end executes a group of statements in a loop for a specified number of times.

MATLAB FOR LOOP INCREMENT CODE

1) I will need to run the code on tens of files.

Matlab for loop increment