GRIB driver

This drb-driver-grib module implements grib format access with DRB data model. It is able to navigate among the grib contents.

GRIB Factory and GRIB Node

The module implements the basic factory model defined in DRB in its node resolver. Based on the python entry point mechanism, this module can be dynamically imported into applications.

The entry point group reference is drb.driver.
The driver name is grib.
The factory class DrbGribFactory is encoded into drb.drivers.factory module.

The GRIB data model containing a set of Attributes, Dimensions; Coordinates and Variables. It also includes User-defined set of types. The Drb structure implemented here, reproduces this representation. Attributes are reported in node as node attributes whereas Coordinates, Dimensions and Values are reported as node children. The raw content is available in Variable node requesting array (xarray, or numpy ndarray types)

limitations

The current version does not manage child modification and insertion. DrbGribNode is currently read only. The factory to build DrbGribNode supports file directly opening it with path, for other implementation BytesIO or BufferedIOBase, they are manged with a local temporary file, removed when the node is closed..

Using this module

To include this module into your project, the drb-driver-grib module shall be referenced into requirements.txt file, or the following pip line can be run:

pip install drb-driver-grib

This module depends on cfgrib

See installation of cfgrib, on https://pypi.org/project/cfgrib/ If you install it by pip install you need to install the ECMWF ecCodes library. See https://confluence.ecmwf.int/display/ECC/ecCodes+installation.