# cf.Field.cell_method¶

Field.cell_method(identity, default=ValueError(), key=False)[source]

Select a cell method construct by its identity.

Parameters: identity: Select the cell method construct by: The identity or key of a cell method construct. The identity or key of a domain axis construct that a unique cell method construct applies to. The position, in the field construct’s data, of a domain axis construct that a unique cell method construct applies to. A construct identity is specified by a string (e.g. 'method:mean', etc.); a Query object (e.g. cf.eq('method:maximum')); or a compiled regular expression (e.g. re.compile('^m')) that selects the relevant constructs whose identities match via re.search. Each construct has a number of identities, and is selected if any of them match any of those provided. A construct’s identities are those returned by its identities method. In the following example, the construct c has one identity: >>> c.identities() ['method:minimum']  A construct key may optionally have the 'key%' prefix. For example 'cellmethod2' and 'key%cellmethod2' are both acceptable keys. Note that in the output of a print call or dump method, a construct is always described by one of its identities, and so this description may always be used as an identity argument. Parameter example: identity='method:variance' Parameter example: identity='cellmethod1' Parameter example: identity='domainaxis2' Parameter example: identity=0 key: bool, optional If True then return the selected construct key. By default the construct itself is returned. default: optional Return the value of the default parameter if a construct can not be found. If set to an Exception instance then it will be raised instead. CellMethodor str The selected cell method construct, or its key.

Examples:

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