cdfnull − create a null Candis file with specified dimensions
cdfnull dname1 dsize1 start1 incr1 ...
Cdfnull creates a Candis file on the standard output that is null except for the index fields specified by the command line, associated index parameters, and a dummy zero dimensional variable field named "dummy". Each dimension is specified by a set of four parameters, the dimension name, its size, its starting point, and the increment between points. There may be one to four dimensions.