Guidelines for the Space Physics community are found at
Additional metadata appropriate for any particular dataset can be stored as attribute entries as part of the application data within the CDF. CDF has been adopted by the International Solar-Terrestrial Physics (ISTP) project as well as the Central Data Handling Facilities (CDHF) as their format of choice for storing and distributing key parameter data."ĬDF is supported by commercial and open source data analysis/visualization software such as IDL, MATLAB, and IBM's Data Explorer (XP).ĬDF control information acts as an embedded data dictionary. From CDF FAQ: "The CDF software package is used by hundreds of government agencies, universities, and private and commercial organizations as well as independent researchers on both national and international levels. Maintained by the Space Physics Data Facility (SPDF) at NASA/Goddard Space Flight Center. Documentation includes CDF User's Guide and complete list of APIs and their descriptions in reference manuals for the supported programming languages. Source code for the CDF software package is also freely available.Īvailable from. Specifications of the format and the APIs in Java, C, and Fortran are freely available. The Library of Congress Recommended Format Specifications for Datasets lists the CDF file format as an acceptable format.įully documented. Has several versions not documented separately here. Generally used for middle- and final-state archiving. CDF files created on any given platform can be transported to any other platform to which CDF is ported and used with any CDF tools or layered applications.ĬDF Version 2.7 and up contain support for Java Application Program Interfaces (APIs), in addition to the C and Fortran APIs of earlier versions. The application developer is insulated from the actual physical file format for reasons of conceptual simplicity, device independence, and future expandability. This self-describing property allows CDF to be a generic, data-independent format that can store data from a wide variety of disciplines. In addition to the actual data being stored, CDF also stores user-supplied descriptions of the data, known as metadata. The basic component of CDF is a software programming interface that is a device-independent view of the CDF data model. Draft status: Partial (low priority for LC)ĬDF is a conceptual data abstraction for storing, manipulating, and accessing multidimensional data sets.
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