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.

gbker2d 5.6.9                                      August 2017                                        GBKER2D(1)