Rounds an array up to N digits from the left, taking the element with more digits to the left ['max(abs(x(:)))'] as the reference. So, it is different from ROUNDN (mappinf toolbox) because this latter takes the dot as reference.
roundd(0.012345,3) = 0.012300
roundd(0.012345,4) = 0.012350, etc
Note: inside there is a function that check where an array has integer (natural numbers) elements: ISNATURAL
Check the screenshot for an example.
Good. I some times need to clean my data and this has been useful. Thanks