“GNU Data Language”的意思、由来-开放百科全书

The GNU Data Language (GDL) is a free alternative to IDL (Interactive Data Language).^[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)^[7] and other UNIX systems, including Solaris.

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References

1. ^¹{{cite web|last=Khanna |authorlink= |title=GDL .. a free IDL |work= |publisher=MacResearch |date=2006-12-13 |url=http://www.macresearch.org/gdl_a_free_idl_0 |format= |doi= |accessdate=2011-07-31 |archiveurl=https://www.webcitation.org/60asArIxz?url=http://www.macresearch.org/gdl_a_free_idl_0 |archivedate=2011-07-31 |deadurl=no |df= }}
2. ^¹{{cite conference|last=Coulais|first=Alain|conference=Astronomical Data Analysis Software and Systems XIX|year=2010|title=Status of GDL - GNU Data Language|url=http://www.aspbooks.org/a/volumes/article_details/?paper_id=32122|publisher=Astronomical Society of the Pacific|page=187|booktitle=Astronomical Society of the Pacific Conference Series|volume=434 |isbn=978-1-58381-748-3|arxiv=1101.0679|display-authors=etal|bibcode=2010ASPC..434..187C}}
3. ^¹²{{cite web|last=The GDL Team |authorlink= |title=GDL - GNU Data Language |work= |publisher=SourceForge |year=2011 |url=http://gnudatalanguage.sourceforge.net/ |doi= |accessdate=2011-09-10 |archiveurl=https://www.webcitation.org/60q5GchPi?url=http://gnudatalanguage.sourceforge.net/ |archivedate=2011-08-10 |deadurl=no |df= }}
4. ^¹{{cite journal|author1=Mina Koleva|author2=Philippe Prugniel|author3=Antoine Bouchard|author4=Yue Wu|title=ULySS: A Full Spectrum Fitting Package|journal=Astronomy & Astrophysics |volume=501|pages=1269–1279|year=2009|arxiv=0903.2979|bibcode = 2009A&A...501.1269K |doi = 10.1051/0004-6361/200811467 }}; {{cite journal|author1=B.F. Roukema|title=On the suspected timing error in WMAP map-making|year=2010|volume=518|page=A34|journal=Astronomy & Astrophysics |arxiv=1004.4506|doi=10.1051/0004-6361/201014865|bibcode = 2010A&A...518A..34R }}
5. ^¹{{cite web|last1=The GDL Team|title=GDL - GNU Data Language, Frequently Asked Questions|url=http://gnudatalanguage.sourceforge.net/faq.php|accessdate=31 May 2015|year=2015}}

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