compare column values

  1. N

    Comparison and visualization of multiple output data files

    I have 100 data files corresponding to 100 samples. For these 100 data files, I have processed data in 4 different ways to generate result output files. Out of the 4 results files per sample, I would like to consider one of these files as a true result. Now I want to compare the other 3 output...
  2. F

    Vectorized comparison of column values

    Hi all, I have a large dataset in which each observation contains a time stamp. Now I'm trying to calculate a new variable x that counts, for each observation, how many other observations happened within +/- 5 minute of that observation. I tried doing this with a for-loop (see below), but for...