### NDF_ASTAT

Determine the state of an NDF axis component (defined or undefined)

#### Description:

The routine returns a logical value indicating whether a specified NDF axis component has a defined value (or values).

#### Invocation

CALL NDF_ASTAT( INDF, COMP, IAXIS, STATE, STATUS )

#### Arguments

NDF identifier.
##### COMP = CHARACTER $\ast$ ( $\ast$ ) (Given)
Name of the axis component: ’CENTRE’, ’LABEL’, ’UNITS’, ’VARIANCE’ or ’WIDTH’.
##### IAXIS = INTEGER (Given)
Number of the NDF axis for which information is required.
##### STATE = LOGICAL (Returned)
Whether the specified component is defined.
##### STATUS = INTEGER (Given and Returned)
The global status.

#### Notes:

• A comma-separated list of axis component names may also be given, in which case the routine will return the logical "AND" of the states of the specified components (i.e. a .TRUE. result will be returned only if all the components have defined values).

• A value of zero may be given for the IAXIS argument, in which case the routine will return the logical "AND" of the results for all the NDF’s axes.