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For an overview, please see the ODB tutorial here. There is also a shorter tutorial available on this page.


number columns( odb )

Returns a list of the names of the columns in the given ODB variable. If there are no columns, then nil is returned.


number count( odb )

Returns the number of rows contained in the ODB.

 

odb odb_filter(...)

Performs an ODB/SQL query resulting in a new ODB.  This is a Metview icon function, for detailed documentation please see the ODB Filter.


definition odb_visualiser(...)

Defines an object to visualise ODB data using various techniques and plot types. Optionally can run a filter on the ODB data for visualisation. This is a Metview icon function, for detailed documentation please see the ODB Visualiser.


odb read( path )

Returns an ODB object representing an ODB file/database specified by its file system path.


vector or list values( odb, string )

Returns the given column specified by its name. If the column type is number, a vector is returned; if it is string, then a list of strings is returned. If the column cannot be found, nil is returned.

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