The state of the specified object is set to ’undefined’. All subsequent read operations will fail until the object is written to (re-defined). An attempt to reset a slice of an object will reset the whole object, an attempt to reset a structure object will have no effect.

INP = UNIV (Read)

% hreset cfile.data_array.data

Resets the DATA component of structure DATA_ARRAY in file cfile.

% hreset ’cfile.data_array.data(1:10,1:10)’

Resets the whole of object cfile.data_array.data

% hreset cfile.data_array

No effect if DATA_ARRAY is a structure

Calls HDS subroutine DAT_RESET