The PROC MACONTROL statement starts the MACONTROL procedure and it identifies input data sets.

After the PROC MACONTROL statement, you provide either an EWMACHART or an MACHART statement that specifies the type of moving average chart you want to create and the variables in the input data set that you want to analyze. For example, the following statements request a uniformly weighted moving average chart:

proc macontrol data=values;
   machart weight*lot / mu0    = 8.10
                        sigma0 = 0.05
                        span   = 5;
run;

In this example, the DATA= option specifies an input data set named values that contains the process measurement variable weight and the subgroup-variable lot. ¹

You can use options in the PROC MACONTROL statement to do the following:

• specify input data sets containing variables to be analyzed, parameters for calculating moving averages, or annotation information

• specify a graphics catalog for saving traditional graphics

• specify that charts be produced as traditional graphics or line printer charts

• define characters used for features on line printer charts

In addition to the chart statement, you can provide BY statements, ID statements, TITLE statements, and FOOTNOTE statements. If you are producing traditional graphics, you can also provide graphics enhancement statements, such as SYMBOL statements, which are described in SAS/GRAPH: Reference.

See Chapter 3, SAS/QC Graphics, for a detailed discussion of the alternatives available for producing charts with SAS/QC procedures.

Note:If you are using the MACONTROL procedure for the first time, you should also read the sections Getting Started and Getting Started.