How random sample rows through many ranges of a matrix and delete from the original one and print in another one?
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I generated a lot of outputs from a DFT rotine and put all of them in a single sheet and imported as a matrix to MATLAB, something like:
U n m erg
0 0,0833 0,0833 -2
0,050 0,08333 0,0833 -2
0,100 0,0833 0,0833 -2
0,150 0,0833 0,0833 -2
...
6 0,0833 0,0833 -2
...
20,00 0,0833 0,0833 -2
It goes from 0 to 20 for each test, so the whole matrix keeps repeating from 0 to 20 until I have almost 20k rows.
What I need is to random sample 40 rows from 0 to 6, then another 40 from 6 to 20, through the whole matrix. I want to able to sample and delete from the original one and print in another matrix.
Is it possible to automatize the whole process and/or is easier if I keep repeating the sampling manually?
Thank you.
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