Appendix B: Using the PLOTIT Macro

Overview

You can use the PLOT procedure to create low-resolution printer plots of labeled points. Alternatively, you can use the %PLOTIT macro to create high-resolution graphical scatter plots of labeled points.

The %PLOTIT macro is designed to make it easy to display raw data, regression results, and results from the CORRESP, MDS, PRINCOMP, PRINQUAL, and TRANSREG procedures. You can use this macro to position labels, draw curves, vectors, and circles, and shade to show density or a third variable. You can also use the %PLOTIT macro to control the colors, sizes, fonts, and general appearance of the plots and to create contour plots for discriminant analysis.

The %PLOTIT macro is a part of the SAS autocall library. If your site has installed the autocall libraries supplied by SAS Institute and uses the standard configuration of SAS software supplied by the Institute, you need only to ensure that the SAS system option MAUTOSOURCE is in effect to begin using the autocall macros.

For more information about autocall libraries, refer to SAS Macro Language: Reference, First Edition , 1997. The %PLOTIT macro can also be found at SAS Institute's Web site [http://www.sas.com]. Refer to 'Experimental Design and Choice Modeling Macros' and 'Graphical Scatter Plots of Labeled Points' at [http://support.sas.com/techsup/tnote/tnote_stat.html#market].