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. 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. Hence the specification focuses on an API rather than on organization of data in files. ![]() The basic component of CDF is a software programming interface that is a device-independent view of the CDF data model. 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. 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. ![]() Matlab run cdf files software#įrom 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. 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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