GNU_Data_Language Knowpia

GNU Data Language
	GDL rendering the Mandelbrot set
Developer(s)	Marc Schellens
Initial release	2004
Stable release	1.0.4 / 16 December 2023; 3 months ago
Repository	github.com/gnudatalanguage/gdl ;
Written in	C++ (wxWidgets)
Operating system	Linux, macOS, Solaris, POSIX, Windows
Type	Technical computing
License	GNU GPL-2.0
Website	gnudatalanguage.github.io

The GNU Data Language (GDL) is a free alternative to IDL (Interactive Data Language),^[2]^[3]^[4] achieving full compatibility with IDL 7 and partial compatibility with IDL 8.^[5] Together with its library routines, GDL is developed to serve as a tool for data analysis and visualization in such disciplines as astronomy,^[6] geosciences, and medical imaging. GDL is licensed under the GPL. Other open-source numerical data analysis tools similar to GDL include Julia, Jupyter Notebook, 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 offer high computing performance on multi-core processors.

Packaged versions of GDL are available for several Linux and BSD flavours as well as macOS. The source code compiles on Microsoft Windows and other UNIX systems, including Solaris.

GDL is not an official GNU package.

References edit

^ "Release 1.0.4". 16 December 2023. Retrieved 19 December 2023.
^ Martellaro, John (2006-12-12). "A Free Alternative to IDL". The Mac Observer. Archived from the original on 2011-03-02. Retrieved 2011-07-31.
^ Khanna (2006-12-13). "GDL .. a free IDL". MacResearch. Archived from the original on 2011-10-01. Retrieved 2011-07-31.
^ 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. Vol. 434. Astronomical Society of the Pacific. p. 187. arXiv:1101.0679. Bibcode:2010ASPC..434..187C. ISBN 978-1-58381-748-3.
^ http://aramis.obspm.fr/~coulais/IDL_et_GDL/Adass2011/O11_ADASS2011_GDL_Coulais.pdf ^{[bare URL PDF]}
^ Mina Koleva; Philippe Prugniel; Antoine Bouchard; Yue Wu (2009). "ULySS: A Full Spectrum Fitting Package". Astronomy & Astrophysics. 501 (3): 1269–1279. arXiv:0903.2979. Bibcode:2009A&A...501.1269K. doi:10.1051/0004-6361/200811467. S2CID 14595053.; B.F. Roukema (2010). "On the suspected timing error in WMAP map-making". Astronomy & Astrophysics. 518: A34. arXiv:1004.4506. Bibcode:2010A&A...518A..34R. doi:10.1051/0004-6361/201014865.