Beginning in SAS 9.1, many of these plots can be created by using ODS graphics with the appropriate procedure (CORRESP or PRINQUAL). See the procedure documentation in the SAS/STAT User's Guide for examples.

Prior to SAS 9.1, the PLOTIT macro creates plots of labeled points that are typically used to display the results of correspondence analysis, principal components analysis, multidimensional scaling, and preference mapping. It equates axes in the process of making such plots so that an inch on either axis represents the same change in scale. The PLOTIT macro can produce either low resolution (character-based) plots with PROC PLOT or high resolution plots with SAS/GRAPH. PLOTIT requires SAS/STAT software (it uses PROC TRANSREG).

Beginning with Version 7, the PLOTIT macro is a part of the SAS Autocall library, which allows you to call the macro without having to define it in advance. To view the macro code or its documentation in the Program Editor window, issue the following command from the SAS command line:

include '!sasroot\stat\sasmacro\plotit.sas'

In Version 6 releases, the PLOTIT macro is in the SAS/STAT Sample Library and you must first submit the macro code before you can use the macro. To do this, issue the following command from the SAS command line:

include '!sasroot\stat\sample\crspplot.sas'

This command displays the macro and its documentation in the SAS Program Editor window. To define the macro for use, submit the unedited contents of the Program Editor window. In addition to defining the macro, several examples will be run.

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