---
name: "ngraph"
section: "1"
platform: "linux"
package: "ngraph-gtk"
version: "6.09.09-1+b5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/ngraph"
---

# ngraph(1)

creating scientific 2-dimensional graphs

## NAME

Ngraph - creating scientific 2-dimensional graphs

## SYNOPSIS

**ngraph** \[options\] \[data file(s) or ngp file\]

## DESCRIPTION

*Ngraph is the program to create scientific 2-dimensional graphs* for researchers and engineers. Graphs can be exported to PostScript, SVG, PNG or PDF format.

## OPTIONS

Command line options are:

- **-L file**

  load ngp file

- **-x column**

  data column for the x axis

- **-y column**

  data column for the y axis

- **-X**

  use X axis as the x axis

- **-Y**

  use Y axis as the y axis

- **-U**

  use U axis as the x axis

- **-R**

  use R axis as the y axis

- **-d {mark \| line \| polygon \| curve \| diagonal \| arrow \| rectangle \| rectangle\_fill \| rectangle\_solid\_fill \| errorbar\_x \| errorbar\_y \| staircase\_x \| staircase\_y \| bar\_x \| bar\_y \| bar\_fill\_x \| bar\_fill\_y \| bar\_solid\_fill\_x \| bar\_solid\_fill\_y \| fit}**

  specify plot type

- **-m type**

  specify mark type (0-89)

- **-o size**

  specify mark size

- **-l style**

  specify line style

- **-w width**

  specify line width

- **-CR n**

  specify red component of the 1st plot color (0-255)

- **-CG n**

  specify green component of the 1st plot color (0-255)

- **-CB n**

  specify blue component of the 1st plot color (0-255)

- **-cr n**

  specify red component of the 2nd plot color (0-255)

- **-cg n**

  specify green component of the 2nd plot color (0-255)

- **-cb n**

  specify blue component of the 2nd plot color (0-255)

- **-s line**

  specify number of the head skip

- **-r step**

  specify number of the read step

- **-f line**

  specify number of the final line

- **-vx n**

  neighbor average of the x data

- **-vy n**

  neighbor average of the y data

- **-mx formula**

  specify math transformation for the x data

- **-my formula**

  specify math transformation for the y data

- **-ex {linear \| log \| inverse \| MJD}**

  specify scale type of the x axis

- **-ey {linear \| log \| inverse \| MJD}**

  specify scale type of the y axis

- **-minx value**

  specify minimum value of x axis

- **-maxx value**

  specify maximum value of x axis

- **-incx value**

  specify increment value of x axis

- **-miny value**

  specify minimum value of y axis

- **-maxy value**

  specify maximum value of y axis

- **-incy value**

  specify increment value of y axis

- **-g**

  load settings from data file

- **-png file**

  convert ngp file to PNG format

- **-pdf file**

  convert ngp file to PDF format

- **-ps file**

  convert ngp file to PostScript format

- **-eps file**

  convert ngp file to Encapsulated PostScript format

- **-svg file**

  convert ngp file to SVG format

- **-gra file**

  convert ngp file to GRA format

- **-dialog**

  show print dialog (with -p option)

- **-p file**

  print ngp file

- **-n**

  output ngp-file to stdout

- **-h, --help**

  show help message

- **-v, --version**

  show version of *Ngraph*

- **-V, --VERSION**

  show detail information about *Ngraph*

## FILES

- *${HOME}/.Ngraph/Ngraph.nsc*

  start up script

- *${HOME}/.Ngraph/Ngraph.ini*

  configuration file

- *${HOME}/.Ngraph/Ngraph.ngp*

  default graph

## AUTHORS

**Satoshi ISHIZAKA**

**Hiroyuki Ito** \<ZXB01226@nifty.com\>

## SEE ALSO

[**ngp2**(1)](/ngp2/1.md)

## COPYRIGHT

Copyright © 2003 Satoshi ISHIZAKA

Copyright © 2008-2011 Hiroyuki Ito