OnWorks favicon

gdl - Online in the Cloud

Run gdl in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command gdl that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



gdl - GNU Data Language incremental compiler


gdl [--help] [-h] [--version] [-v] [-V] [[-]-quiet] [-q] [ -arg value ] [ -args ... ] [
-e statement ] [ -pref=/path/to/preferenceFile ] [ batch_file ... ]


gdl is an incremental compiler for the GNU Data Language (GDL). GDL is being developed
with the aim of providing an open-source drop-in replacement for ITTVIS Interactive Data
Language (IDL). It is also partially compatible with Visual Numerics (VN) PV-WAVE. IDL and
PV-WAVE are registered trademarks of ITTVIS and VN, respectively. GDL and its library
routines are designed as a tool for numerical data analysis and visualisation. GDL is
dynamically typed, vectorized and has object-oriented programming capabilities. The
library routines handle numerical calculations, data visualisation, signal/image
processing, file input/output (incl. graphical and scientific data formats such as TIFF,
PNG, netCDF, HDF etc) and interaction with host OS.

Information on GDL/IDL/PV-WAVE syntax and library routines can be found in e.g.:

- GDL documentation draft at: http://gnudatalanguage.sf.net/gdl.pdf

- IDL manual on-line @ NASA.gov: http://idlastro.gsfc.nasa.gov/idl_html_help/home.html

- ITTVIS (ittvis.com) and Visual Numerics (vni.com) websites

- comp.lang.idl-pvwave newsgroup

A vast part of GDL library routines is implemented using open-source libraries including
GSL, plPlot, and optionally: readline, FFTW, ImageMagick, netCDF, HDF4, HDF5, libproj4,
UDUNITS-2, libps and others.


--help (or -h)
Show summary of options

--version (or -v, -V)
Show version of program

--quiet (or -quiet, -q)
Suppress welcome messages

-arg value
Tells COMMAND_LINE_ARGS() to report the following argument (may be specified more
than once)

-args ...
Tells COMMAND_LINE_ARGS() to report all following arguments

-e statement
Execute given statement and exit (last occurrence taken into account only, executed
after startup file, may not be specified together with batch files)

(only partially working now) setting using external text file few variables
including default preferences (e.g. X11 Windows Size)

--fakerelease version
setting !VERSION.RELASE to that value. !VERSION.RELASE is often tested by
procedures to decide whether some function or option should be used. It is
sometimes possible to use this option to fool a procedure that request a specific

The -demo, -em, -novm, -queue, -rt, -ulicense and -vm options
are ignored for compatibility with IDL.

A list of batch files to be executed before entering the interactive
mode (but after executing a startup file, if specified) may be given when not using
the -e option.

Use gdl online using onworks.net services

Free Servers & Workstations

Download Windows & Linux apps

  • 1
    VirtualGL redirects 3D commands from a
    Unix/Linux OpenGL application onto a
    server-side GPU and converts the
    rendered 3D images into a video stream
    with which ...
    Download VirtualGL
  • 2
    Library to enable user space
    application programs to communicate with
    USB devices. Audience: Developers, End
    Users/Desktop. Programming Language: C.
    Download libusb
  • 3
    SWIG is a software development tool
    that connects programs written in C and
    C++ with a variety of high-level
    programming languages. SWIG is used with
    Download SWIG
  • 4
    WooCommerce Nextjs React Theme
    WooCommerce Nextjs React Theme
    React WooCommerce theme, built with
    Next JS, Webpack, Babel, Node, and
    Express, using GraphQL and Apollo
    Client. WooCommerce Store in React(
    contains: Products...
    Download WooCommerce Nextjs React Theme
  • 5
    Package repo for ArchLabs This is an
    application that can also be fetched
    It has been hosted in OnWorks in...
    Download archlabs_repo
  • 6
    Zephyr Project
    Zephyr Project
    The Zephyr Project is a new generation
    real-time operating system (RTOS) that
    supports multiple hardware
    architectures. It is based on a
    small-footprint kernel...
    Download Zephyr Project
  • More »

Linux commands

  • 1
    4s-import � Import RDF into a 4store KB
    Run 4s-importJ
  • 2
    4s-query � Run SPARQL queries on a
    4store storage backend ...
    Run 4s-queryJ
  • 3
    cpuburn, burnBX, burnK6, burnK7,
    burnMMX, burnP5, burnP6 - a collection
    of programs to put heavy load on CPU ...
    Run cpuburn
  • 4
    cpufreq-aperf - Calculates the average
    frequency over a time period SYNTAX:
    cpufreq-aperf [options] DESCRIPTION: On
    latest processors exist two MSR
    registers r...
    Run cpufreq-aperf
  • 5
    g.dirseps - Internal GRASS utility for
    converting directory separator
    characters. Converts any directory
    separator characters in the input string
    to or from na...
    Run g.dirsepsgrass
  • 6
    g.extension - Maintains GRASS Addons
    extensions in local GRASS installation.
    Downloads, installs extensions from
    GRASS Addons SVN repository into local
    GRASS i...
    Run g.extensiongrass
  • More »