ecCodes
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is a package developed by ECMWF which provides an application
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programming interface
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and a set of tools for decoding and encoding messages in the following formats:
- WMO FM-
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- 92 GRIB edition 1
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- and edition 2
- WMO FM-
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- 94 BUFR edition 3
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- and edition 4
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- WMO
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- GTS abbreviated header (only decoding
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- ).
A useful set
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provide quick access to the messages. C, Fortran 90 and Python interfaces provide access to the main ecCodes functionality.
ecCodes is an evolution
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of GRIB-API
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. It is designed to provide the user with a simple set of functions to access data from several formats with a key/value approach.
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For GRIB encoding and decoding, the GRIB-API functionality is provided fully in ecCodes with
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only minor interface and behaviour changes. Interfaces for C, Fortran 90 and Python
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are all maintained as in GRIB-API. However, the GRIB-API Fortran 77 interface is no longer available.
In addition, a new set of functions with the prefix "codes_" is provided to operate on all the supported message formats
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. These functions have the same
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interface and behaviour
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as the "grib_" functions.
A selection
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of GRIB-API
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tools has been included in ecCodes (ecCodes GRIB tools), while new tools are available for the BUFR (ecCodes BUFR tools) and GTS formats. The new tools
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have been developed to be as similar as possible to the
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existing GRIB-API
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tools maintaining, where possible, the same options and behaviour. A significant difference compared with GRIB-API tools is that bufr_dump
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produces output in JSON format suitable for many web based applications.
GRIB-API library is fully available in ecCodes library and we encorage users to test their GRIB-API applications linking with ecCodes and provide feedback of eventual problems. We highlight that there are name clashes preventing simultaneous use of GRIB-API and ecCodes libraries. For this reason and to simplify the software maintainance it is foreseen that GRIB-API will be replaced by ecCodes in a timeframe of the order of one year. The migration from GRIB-API to ecCodes will be transparent for the current GRIB-API users.
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| Note |
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ecCodes is now the primary GRIB encoding/decoding package used at ECMWF. GRIB-API is no longer maintained (as of December 2018). Replacing GRIB-API with ecCodes is expected to be transparent for current GRIB-API users. In particular the "grib_" functions are included in the ecCodes library. Users are strongly advised to start the migration process |
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. |