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tabfunc (1)
NAME
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tabfunc - convert table to functions for rcalc, etc. |
SYNOPSIS
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tabfunc [ -i ] func1 [func2 ..] |
DESCRIPTION
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Tabfunc reads a table of numbers from the standard
input and converts it to an expression suitable for
calc(1), rcalc(1) and their cousins. The input must
consist of a M x N matrix of real numbers, with exactly one
row per line. The number of columns must always be the same
in each line, separated by whitespace and/or commas, with no
missing values. The first column is always the independent
variable, whose value indexes all of the other elements.
This value does not need to be evenly spaced, but it must be
either monotonically increasing or monotonically decreasing.
(I.e. it cannot go up and then down, or down and then up.)
Maximum input line width is 4096 characters and the maximum
number of data rows is 1024. Input lines not beginning with
a numerical value will be silently ignored. |
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The command-line arguments given to tabfunc are the
names to be assigned to each column. Tabfunc then
produces a single function for each column given. If there
are some columns which should be skipped, the dummy name
"0" may be given instead of a valid identifier.
(It is not necessary to specify a dummy name for extra
columns at the end of the matrix.) |
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The -i option causes tabfunc to produce a
description that will interpolate values in between those
given for the independent variable on the
input. |
EXAMPLE
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To convert a small data table and feed it to rcalc for some
calculation: |
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rcalc -e `tabfunc f1 f2 < table.dat` -f
com.cal |
AUTHOR
SEE ALSO
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