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GNU Data Language (GDL) is a free/libre/open source incremental compiler compatible with IDL and to some extent with PV-WAVE and together with its library routines it serves as a tool for data analysis and visualization in such disciplines as astronomy, geosciences and medical imaging.
Category
Statistical Software Free
Features
• Objects, pointers, structs and arrays, • System, common block and assoc variables, • All operators and datatypes, • _EXTRA, _STRICT_EXTRA and _REF_EXTRA keywords.
License
Proprietary
Price
• Free
Pricing
Subscription
Free Trial
Available
Users Size
Small (<50 employees), Medium (50 to 1000 Enterprise (>1001 employees)
• Objects, pointers, structs and arrays, • System, common block and assoc variables, • All operators and datatypes,
What are the benefits?
• FOREACH loop • Negative array indices • Garbage collection pointers and objects • Call methods on an object using "." (e. g. object.aMemberProcedure,arg1)
PAT Rating™
Editor Rating
Aggregated User Rating
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Ease of use
7.6
6.2
Features & Functionality
7.5
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Advanced Features
7.6
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Integration
7.4
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Performance
7.4
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Customer Support
7.5
3.1
Implementation
—
Renew & Recommend
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Bottom Line
GNU Data Language (GDL) is a free/libre/open source incremental compiler compatible with IDL and to some extent with PV-WAVE, licensed under the GPL and developed by an international team of volunteers led by Marc Schellens - the project's founder.
7.5
Editor Rating
4.7
Aggregated User Rating
1 rating
You have rated this
GNU Data Language (GDL) is a free/libre/open source incremental compiler compatible with IDL and to some extent with PV-WAVE and together with its library routines it serves as a tool for data analysis and visualization in such disciplines as astronomy, geosciences and medical imaging. GNU Data Language (GDL) offers features such as GDL library, supports several data formats such as netCDF, HDF4, HDF5, GRIB, PNG, TIFF, DICOM, etc. Graphical output is handled by X11, PostScript, SVG or z-buffer terminals.
The last one allowing output graphics (plots) to be saved in a variety of raster graphics formats, integrated debugging facilities and a Python bridge (Python code can be called from GDL; GDL can be compiled as a Python module). GDL as a language is dynamically-typed, vectorized and has object-oriented programming capabilities. GDL library routines handle numerical calculations, data visualization, signal/image processing, interaction with host OS and data input/output.
Graphical output is partially implemented where the PLOT, OPLOT, PLOTS, XYOUTS, CONTOUR, SURFACE, TVRD and TV commands (along with WINDOW, WDELETE, SET_PLOT, WSET, TVLCT) work (important keywords, some !P system variable tags and multi-plots are supported) for X windows, z-buffer and postscript output.
The GNU readline library 4.3 or later is needed (GDL should compile without it, but it's very inconvenient to use that way, furthermore, proper event handling for graphic windows requires readline). GDL supports compilation using both the shipped autotools "configure" script as well as using CMake. GDL was developed using ANTLR v2 but unless users want to change the grammar (*.g files) users don't need ANTLR since all relevant ANTLR files are included in the package.
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