Scripting Guide - SAS

Chapter 12 Scripting Graphs 401
Graphing Elements
)
);
Figure 12.7 Normal Contour Function
Normal Contour is thus a generalized way to accomplish effects like Bivariate’s density ellipses, which are
demonstrated to good effect with the Football sample data (just open the data table Football and run its
stored Bivariate script).
Gradient Function
The syntax of the gradient function is
Gradient Function(expression, xname, yname, [zlow, zhigh], ZColor([colorLow,
colorHigh]), , )
This function fills a set of rectangles on a grid according to a color determined by the expression value as it
crosses a range corresponding to a range of colors. To implement it, use the following syntax.
GradientFunction(
expression
xname,yname,
[zlow, zhigh],
ZColor([colorLow,
colorHigh])
)
the expression to be contoured, which is a function in terms
of the two variables that follow
the two variable names used in the expression
the low and high expression values the gradient is scaled
between
the colors corresponding to the low value and the high
value
optional specification for the grid of values