Nice one! Seems to work well.
Would be nice to add a check that if only one argin is entered (one column/vector) - then it calcs inverse prctile on each entry of the column/vector.
For example, I have a vector
myvector=[0.8 0.5 .2 0.6 0.8 0.5 0.3 0.6 0.9 1.3]'
and I want to find what percentile each corresponds to, so I run
It would be a bit cleaner to be able to just call invprctile(myvector)