I have this kind of data. First column and second column refer to an index and x value relatively.
data = [ 1 201; 1 202; 2 301; 2 313; 2 311; 3 401; 3 452; 3 433; 3 405; 4 504; 4 303; 4 604; 4 703; 5 600; 5 700; 5 606; 5 703; 5 905; 5 444;];
For example, I want to delete from after 4th data in each index if the number of index is over 4.
The length of 3rd, 4th and 5th index is 4, 4, 6 relatively in this example data. I'd like to keep their data only from 1st to 3rd values.
Every index has less number than 4.
data_filtered = [1 201; 1 202; 2 301; 2 313; 2 311; 3 401; 3 452; 3 433; 4 504; 4 303; 4 604; 5 600; 5 700; 5 606;];
If anyone can help, it would be greatly appreciated.
Thank you!
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