This section adds a title to the graph that shows the fitted model. You can add a title by calling the SetTitleText and ShowTitle
methods of the Plot class.
However, in this case you first need to convert the values stored in the `Estimate`

matrix from numerical to character values. One way to do this is to apply a *w.d* format by using the Base SAS function PUTN.
You can then concatenate pieces of the title together using the SAS/IML CONCAT function and display the result.

The statements that follow build the title intelligently. Let be the intercept and be the slope of the regression line. The regression line for this example has negative slope (). If you built the title as

title = concat("wind_kts = ", b0, " + ", b1, " * min_pressure");

then the title string might appear as

wind_kts = 1333.35 + -1.29 * min_pressure

While this is correct, it is awkward to read. A more aesthetic title would be

wind_kts = 1333.35 - 1.29 * min_pressure

This can be accomplished by treating the case of negative slope separately from the case of positive slope.

Add the following statements at the bottom of the program window, and select Figure 8.2 shows how the title appears.

→ from the main menu.b0 = putn( Estimate[1], "7.2" ); if Estimate[2]<0 then do; /* if slope is negative */ sign = " - "; /* display b0 - (-b1) */ b1 = putn( -Estimate[2], "4.2" ); end; else do; /* else display b0 + b1 */ sign = " + "; b1 = putn( Estimate[2], "4.2" ); end; title = concat( "wind_kts = ", b0, sign, b1, " * min_pressure" ); FitPlot.SetTitleText( title ); FitPlot.ShowTitle();