The aspect ratio affects
many graphics characteristics, such as the shape of software characters
and the roundness of pie charts. Some graphics drivers do not produce
correct output if the aspect ratio is anything other than the default.
When you use a device that uses local scaling (that is, the device
itself can scale the output, for example, some plotters), use ASPECT=
to tell
SAS/GRAPH the scaling factor.
Note: You can get more reliable
results if you use the default aspect ratio and use the HSIZE= and
VSIZE= graphics options to set the dimensions.