From Macro/Python the icon can be called as
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).
Gallery Examples using ODB Filter
The ODB Filter Editor
Specifies the path to the input ODB
Specifies the input ODB as an icon. If both an icon (in ODB Data) and a filename (in ODB Filename) are specified the icon takes precedence.
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 output. The default value is -1.
Fail On Empty Output
When it is set to No 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 Yes the icon will fail on empty output. The default value is Yes.