Generates a 2d histogram from paired count data.
USAGE:
hist2d [OPTIONS] <INPUT>
FLAGS:
-h, --help Prints help information
-V, --version Prints version information
OPTIONS:
-n, --nbins <N> Number of bins in each dimension (memory use will be O(N^2)) [default: 1000]
-s, --sep <SEPARATOR> Separator for output [default: ]
ARGS:
<INPUT> Input file (with counts in 2nd and 3rd columns)