Controlling Dimensions
The outer dimensions
of the device's display area are controlled by the values of the XMAX
and YMAX device parameters. XMAX sets the maximum horizontal dimension;
YMAX sets the maximum vertical dimension.
The outer dimensions
of the graphics output area are controlled by the values of the HSIZE
and VSIZE device parameters.
Since the dimensions
of the device display area are typically the same as the dimensions
of the graphics output area, the default value of HSIZE and VSIZE
is 0. However, for hard-copy devices, because the XMAX, YMAX values
represent the outer boundaries of the output medium (such as a sheet
of paper), these devices might need a margin. Therefore, HSIZE, VSIZE,
HORIGIN, and VORIGIN are assigned default values and the default graphics
output area is somewhat smaller than the device's display area. Default Dimensions of the PSCOLOR Device illustrates
such a device.
For additional discussion
of how the default values for HSIZE and HORIGIN are determined using
the value of the LEFTMARGIN option, see HSIZE and HORIGIN.
Note that HORIGIN and
VORIGIN define the left margin and bottom margin, respectively. The
right margin and top margin are calculated by the device driver as
follows:
right-margin = XMAX − (HSIZE + HORIGIN)
top-margin = YMAX − (VSIZE + VORIGIN)
You can change the dimensions
of the graphics output area for a SAS session or for a single graph
with the HSIZE= and VSIZE= graphics options. Changing the size of
the graphics output area does not change the dimensions of the device's
display area or affect the resolution. The values of HSIZE= and VSIZE=
cannot exceed the maximum dimensions for the device as specified by
XMAX and YMAX. Furthermore, you cannot specify values for graphics
options HSIZE= and VSIZE= that exceed the HSIZE and VSIZE values for
that device.