Actually, this was to interleave the input files. I had a problem where I had N files, each with 2 columns: a time column and a value column. I needed to interleave the N files, so that the output would have N+1 columns: one sorted time columns and N columns of either empty cells or the corresponding value. I hope this is a bit clearer.

In reply to Re^2: reading N files by gri6507
in thread reading N files by gri6507

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