GNU Data Language

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GNU Data Language
GDL logo
Gdl screenshot.png
GDL rendering the Mandelbrot set
Developer(s) Marc Schellens
Initial release 2004 (2004)
Stable release
0.9.7 / January 21, 2017; 3 months ago (2017-01-21)
Development status Active
Written in C++ (wxWidgets)
Platform Linux, Mac OS X, Solaris, POSIX, Windows
Type Technical computing
License GNU General Public License

The GNU Data Language (GDL) is a free alternative to IDL (Interactive Data Language).[1][2][3] Together with its library routines, GDL is developed to serve as a tool for data analysis and visualization in such disciplines as astronomy,[4] geosciences, and medical imaging.[5] GDL is licensed under the GPL. Other open-source numerical data analysis tools similar to GDL include GNU Octave, NCAR Command Language (NCL), Perl Data Language (PDL), R, Scilab, SciPy, and Yorick.

GDL as a language is dynamically-typed, vectorized, and has object-oriented programming capabilities. GDL library routines handle numerical calculations (e.g. FFT), data visualisation, signal/image processing, interaction with host OS, and data input/output. GDL supports several data formats, such as NetCDF, HDF (v4 & v5), GRIB, PNG, TIFF, and DICOM. Graphical output is handled by X11, PostScript, SVG, or z-buffer terminals, the last one allowing output graphics (plots) to be saved in raster graphics formats. GDL features integrated debugging facilities, such as breakpoints. GDL has a Python bridge (Python code can be called from GDL; GDL can be compiled as a Python module). GDL uses Eigen (C++ library) numerical library (similar to Intel MKL) to have excellent computing performance on multi-cores processors, with better benchmark than IDL on large matrix operations.[5]

Packaged versions of GDL are available for several Linux and BSD flavours as well as Mac OS X. The source code compiles on Microsoft Windows (since GDL 0.9.3)[6] and other UNIX systems, including Solaris.

GDL is not an official GNU package.

See also[edit]


  1. ^ Martellaro, John (2006-12-12). "A Free Alternative to IDL". The Mac Observer. Archived from the original on 2011-07-31. Retrieved 2011-07-31. 
  2. ^ Khanna (2006-12-13). "GDL .. a free IDL". MacResearch. Archived from the original on 2011-07-31. Retrieved 2011-07-31. 
  3. ^ Coulais, Alain; et al. (2010). "Status of GDL - GNU Data Language". Astronomical Society of the Pacific Conference Series. Astronomical Data Analysis Software and Systems XIX. 434. Astronomical Society of the Pacific. p. 187. arXiv:1101.0679Freely accessible. ISBN 978-1-58381-748-3. 
  4. ^ Mina Koleva; Philippe Prugniel; Antoine Bouchard; Yue Wu (2009). "ULySS: A Full Spectrum Fitting Package". Astronomy & Astrophysics. 501: 1269–1279. arXiv:0903.2979Freely accessible. Bibcode:2009A&A...501.1269K. doi:10.1051/0004-6361/200811467. ; B.F. Roukema (2010). "On the suspected timing error in WMAP map-making". Astronomy & Astrophysics. 518: A34. arXiv:1004.4506Freely accessible. Bibcode:2010A&A...518A..34R. doi:10.1051/0004-6361/201014865. 
  5. ^ a b The GDL Team (2011). "GDL - GNU Data Language". SourceForge. Archived from the original on 2011-08-10. Retrieved 2011-09-10. 
  6. ^ The GDL Team (2015). "GDL - GNU Data Language, Frequently Asked Questions". Retrieved 31 May 2015. 

External links[edit]