Provided by: gbutils_5.6.8-1build1_amd64 
NAME
gbker2d - Kernel density estimate for bivariate data
SYNOPSIS
gbker2d [options]
DESCRIPTION
2D kernel density estimation on an equispaced grid. Data are read from standard input as couple (x,y).
The kernel bandwidth if not provided with the option -H is set automatically. Different bandwidths can be
specified for x and y.
OPTIONS
-n number of points where the density is computed (default 10) use comma (,) to specify different
values for x and y components
-H set the kernel bandwidth explicitly; use comma (,) to specify different values for x and y
components
-S scale the kernel bandwidth with respect to euristic 'optimal' value; use comma (,) to specify
different values for x and y components
-K choose the kernel to use: 0: Epanenchnikov 1: Rectangular 2: Silverman type 1 3: Silverman type 2
(default 0)
-D switch off data de-variation procedure
-v verbose mode
-F specify the input fields separators (default " \t")
-h this help
EXAMPLES
gbker2d -n 10,20 -K 1 < file
compute the kernel on an equispaced grid 10x20 using a rectangular kernel
AUTHOR
Written by Giulio Bottazzi
REPORTING BUGS
Report bugs to <gbutils@googlegroups.com> 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.