The routine returns the length of the specified axis character component of an NDF (i.e. the number of characters in the LABEL or UNITS component of an NDF axis).

CALL NDF_ACLEN( INDF, COMP, IAXIS, LENGTH, STATUS )

INDF = INTEGER (Given)

COMP = CHARACTER $\ast$ ( $\ast$ ) (Given)

IAXIS = INTEGER (Given)

LENGTH = INTEGER (Returned)

STATUS = INTEGER (Given and Returned)

• The length of an NDF axis character component is normally determined by the length of the VALUE string assigned to it by a previous call to NDF_ACPUT (note that this could include trailing blanks).

• If the requested axis component is in an undefined state, then the length returned will be the number of characters in the default value which would be returned by the NDF_ACGET routine.

• A value of zero may be supplied for the IAXIS argument, in which case the routine will return the maximum component length for all the NDF axes.