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Matlab cdf files manuals#ĭocumentation includes CDF User's Guide and complete list of APIs and their descriptions in reference manuals for the supported programming languages.
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Maintained by the Space Physics Data Facility (SPDF) at NASA/Goddard Space Flight Center.
Matlab run cdf files software#
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. 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. Support for software interfaces (APIs, etc.) 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. The basic component of CDF is a software programming interface that is a device-independent view of the CDF data model. Hence the specification focuses on an API rather than on organization of data in files. APIs in Fortran and C are available for all versions, in Java for version 2.7 and up.ĭata documentation (quality, provenance, etc.)Ĭapabilities for embedding user documentation for the dataset as a whole or for particular elements through a data dictionary can support documentation of precision, provenance, etc.ĬDF is designed to support multi-dimensional data. The structure of CDF allows one to define an unlimited number of variables completely independent (loosely coupled) of one another and disparate in nature, a group of variables that illustrate a strong dependency (tightly coupled) on one another or both simultaneously.Ĭompared to HDF format, CDF permitted cross-linking data from different instruments and spacecraft in ISTP with one development effort (according to ).įile type signifiers and format identifiers The CDF structure is based on variable definitions (name, data type, number of dimensions, sizes, etc.) where a collection of data elements is defined in terms of a variable. In 2002, the CDF office developed an XML-based markup language called CDF Markup Language (CDFML) to describe CDF data and metadata. Translators among various data formats, including CDF are available at ĬDF was designed and developed in 1985 by the National Space Science Data Center (NSSDC) at NASA/GSFC. CDF was originally written in FORTRAN and only ran in VAX/VMS environments.ĬDF V3.0 was released on February 10, 2005.
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V3.0 is backward compatible with CDF V2.7, V2.6, and V2.5, but not vice versa. Libraries for CDF 3.0.0 and later will read a file that was created with CDF 2.5, 2.6, or 2.7 library, and save the file in the version that was originally created under (not 3.0). A file created from scratch with CDF 3.0.0 or later will be stored in the new format. The 3.0 format is incompatible with the previous versions of the CDF library. As of December 2021, the latest version of the CDF library is 3.8.1.