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This icon

performs an ODB/SQL query on an ODB database (ODB-1) or file (ODB-2). The result is always an ODB file (in ODB-2 format)

starts up the Met.3D visualisation system with specified input GRIB data and options.


Info

From Macro/Python the icon can be called as odb_filter().

Tip

A tutorial about using ODB in Metview can be found here.

What is ODB?

ODB is a database developed at ECMWF to store and retrieve large volumes of meteorological observational and feedback data efficiently for use within the IFS.

Currently, ODB comes in two flavours:

  • ODB-1 (the original hierarchical table format capable of running in a parallel environment within IFS)
    • ODB-2 (a new flat format with a modern API used for archiving in MARS

    met3d().



    The

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    Met3D Editor

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    Source

    Specifies the path to the input ODBGRIB data.

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    Data

    Specifies the input ODB GRIB as an icon/set of icons. If both an icon (in ODB Data) and a filename (in ODB Filename Source) are specified the icon takes precedence.

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    Pipeline File

    Specifies the ODB/SQL query to run.

    ODB NB Rows

    Specifies the maximum number of rows in the result. If -1 is given here the number of rows is not limited in the outputpipeline file for the Met.3D session. The default value is -1.

    Fail On Empty Output

    DEFAULT which means a pre-built pipeline file will be used.

    Frontend File

    Specifies frontend file for the Met.3D session. The default value is DEFAULT which means a pre-built frontend file will be usedWhen it is set to Yes the icon will not fail if the resulting ODB is empty (in Macro the return value is nil while in Python it is None). Otherwise when it is set to No the icon will fail on empty output. The default value is Yes.