PGPLOT Module: PGSITF -- set image transfer function


SUBROUTINE PGSITF (ITF)
INTEGER ITF

Set the Image Transfer Function for subsequent images drawn by
PGIMAG, PGGRAY, or PGWEDG. The Image Transfer Function is used
to map array values into the available range of color indices
specified with routine PGSCIR or (for PGGRAY on some devices)
into dot density.


Arguments
ITF (input) : type of transfer function:
ITF = 0 : linear
ITF = 1 : logarithmic
ITF = 2 : square-root