## SYNOPSIS

**gbinterp**[

*options*]

## DESCRIPTION

Compute the interpolating function of user provided data on a regular mesh. Data are read from standard input as couples (X,Y). The interpolation (x, f(x)) is printed for x in [rmin,rmax]. When rmin=rmax print a single value. With option**-I**the points where the interpolation is computed are read from a file.

## OPTIONS

**-n**- number of equispaced points (default 10)
**-r**- set the range 'rmin,rmax' (default full x range)
**-I**- read interpolation points from a file
**-M**- the interpolation method: (default 0)
- 0
- linear (requires at least 2 points)
- 1
- cspline (requires at least 3 points)
- 2
- Akima spline (requires at least 5 points)
**-O**- the type of output: (default 0)
- 0
- interpolation
- 1
- first derivative
- 2
- second derivative
**-F**- specify the input fields separators (default " \t")
**-h**- print this help
**-v**- verbose mode

## AUTHOR

Written by Giulio Bottazzi## REPORTING BUGS

Report bugs to <[email protected]>

Package home page <http://cafim.sssup.it/~giulio/software/gbutils/index.html>

## COPYRIGHT

Copyright © 2001-2015 Giulio Bottazzi This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License (version 2) as published by the Free Software Foundation;This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.