---
name: "gbkreg2d"
section: "1"
platform: "linux"
package: "gbutils"
version: "6.3-1+b1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/gbkreg2d"
---

# gbkreg2d(1)

Kernel non linear regression for bivariate data

## NAME

gbkreg2d - Kernel non linear regression for bivariate data

## SYNOPSIS

**gbkreg2d** \[*options*\]

## DESCRIPTION

2D kernel estimation of conditional moments. Data are read from standard input as triplet (x,y,z). The moments of z are computed on a regular grid in x and y The kernel bandwidth if not provided with the option **-H** is set automatically. Different bandwidths can be specified for x and y. Different moments are given in different data block. Options **-n**, **-f**, **-H** and **-S** accept comma separated values to specify different values for x and y components

## OPTIONS

- **-n**

  number of points where the estimation is computed (default 10)

- **-f**

  fraction of the support for which to print the result (default .9)

- **-H**

  set the kernel bandwidth explicitly

- **-S**

  scale the kernel bandwidth with respect to heuristic 'optimal'

- **-K**

  choose the kernel: 0 Epanenchnikov, 1 Rectangular, 2 Silverman type I 3 Silverman type II (default 0)

- **-O**

  set the output, comma separated list of m mean, v standard deviation, s skewness and k kurtosis (default m)

- **-D**

  switch off data de-variation procedure

- **-v**

  verbose mode

- **-F**

  specify the input fields separators  (default " \\t")

- **-h**

  this help

## 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 © 2001-2018 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.