routine subtracts a scalar (i.e.
constant) value from each pixel of an NDF’s
data array to produce a new NDF data structure.
csub in scalar out
IN = NDF (Read)
Input NDF data structure, from which the value is to
OUT = NDF (Write)
Output NDF data structure.
= _DOUBLE (Read)
The value to be subtracted from the NDF’s data array.
TITLE = LITERAL (Read)
The title for the output NDF. A null value will cause
the title of the NDF supplied for Parameter IN to be used instead.
csub a 10 b This subtracts ten from the NDF called a, to make
the NDF called b. NDF b inherits its title from a.
out=b in=a scalar=21.9 This subtracts 21.9 from the NDF called a, to make
the NDF called b. NDF b has the title