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histo (1)
NAME
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histo - compute 1-dimensional histogram of N data columns |
SYNOPSIS
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histo xmin xmax nbins
histo imin imax |
DESCRIPTION
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Histo bins columnular data on the standard input
between the given minimum and maximum values. If three
command line arguments are given, the third is taken as the
number of data bins between the first two real numbers. If
only two arguments are given, they are both assumed to be
integers, and the number of data bins will be equal to their
difference plus one. The bins are always of equal
size. |
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The output is N+1 columns of data (for N columns input),
where the first column is the centroid of each division, and
each row corresponds to the frequencies for each column
around that value. |
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All input data is interpreted as real values, and columns
must be white-space separated. If any value is less than the
minimum or greater than the maximum, it will be ignored on
the input. (I.e., it will not contribute to any frequency
count.) |
EXAMPLE
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To count data values between -1 and 1 in 50
bins: |
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histo -1 1 50 < input.dat |
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To count frequencies of integers between 0 and
255: |
AUTHOR
SEE ALSO
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