The amount of the graph that the plot takes up may be controlled
to some extent with the set offsets command. This command takes
four offset arguments – <left>, <right>, <top> and <bottom>.
By default, each offset is 0. Each offest may be a constant or
an expression. Left and right offsets are given in units of
the x axis, while top and bottom offsets are given in units of
the y axis. The plot of sin(x), displayed with offsets of
0, 0, 2, 2 will take up 1/3 of the displayed y axis.
Offsets are particularly useful with polar coordinates as a means
of compensating for aspect ratio distortion.
Syntax:
set offsets <left>, <right>, <top>, <bottom>
show offsets