Say you have a file with data line-by-line, but you want it to be column-by-column, like this:
1 a
1 2 3 4 2 b
a b c d --> 3 c
4 d
So behaviour becomes similar to Matlab’s rot90 or transpose function, rotating the file 90 degrees counterclockwise*. This stuff may be of interest if we want to plot columns (like, for every digit plot its corresponding letter). Here’s how it’s done: Read the rest of this entry »