Function:     GDSCSA

Purpose:      GDSCSA changes the secondary axis of an output set to be
              obtained by GDSOUT.

Category:     USER IO

File:         gdsinp.c

Author:       K.G. Begeman

Use:          CALL GDSCSA( KEYOUT,    Input    character*(*)
                           AXNUM ,    Input    integer
                           DDELT ,    Input    double precision
                           DROTA ,    Input    double precision
                           DRPIX ,    Input    double precision
                           DRVAL ,    Input    double precision
                           DTYPE ,    Input    character*(*)
                           DUNIT ,    Input    character*(*)
                           SMASK )    Input    integer

              KEYOUT     Keyword associated with a GDSOUT call.
              AXNUM      The axis number of the axis to be changed.
              DDELT      Increment in physical units along axis.
              DROTA      Rotation angle of axis.
              DRPIX      Reference pixel of axis.
              DRVAL      Physical reference value at reference pixel.
              DTYPE      Axis name.
              DUNIT      Physical units of axis.
              SMASK      Bit mask denoting which of the six above values
                         are defined. The codes are as follows:
                         item        bit      add
                         DDELT        5        32
                         DROTA        4        16
                         DRPIX        3         8
                         DRVAL        2         4
                         DTYPE        1         2
                         DUNIT        0         1
                         So SMASK = 14 (2 + 4 + 8) means that DTYPE,
                         DRPIX and DRVAL are defined.
                         Note: If SMASK==0, the secondary axis is removed.

Related Docs: gdsinp.dc2, gdsout.dc2, gdsasn.dc2, gdscss.dc2, gdscpa.dc2

Updates:      Jan 25, 1990: KGB, Document created.