This section describes XY coordinate system that is used to
locate and place XY objects. Any any CD canvas can be the place where the
result is plot, consider the following example:

The graph area is set by normalized coordinate system (related to CD
canvas). As an example, consider that the graph area is set with the
following values: xmin = 0.1, ymin = 0.1, xmax = 0.7 and ymax = 0.5. The
result is like the figure below.

The position and size of texts, axes, markers and legends are all
normalized to tha global graph area. That is, if the axis attributes are set
as: x = 0.1, y = 0.1 and size = 0.4, the axis' position should be like:

The region where the mask are drawn is called the mask area. It is
implicity calculated based on the axes position. |