qshiftedline
Renders a line displaced from data points
Help text:
qshiftedline(xx, yy, dx, dy) is like qplot(xx, yy) except that the
plot is displaced by (dx, dy) points on the graph.
xx, yy, dx, dy may be vectors or scalars. Any scalars are automatically
converted to vectors of the appropriate length. All vectors must be
the same length.
See also qgline.