PROC MVPMONITOR: Functionality of PROC MVPMONITOR

Functionality of PROC MVPMONITOR

The separation of the two procedures, MVPMODEL and MVPMONITOR, provides the flexibility needed for both Phase I and Phase II analyses.

Functionality for Phase I Analysis

In a Phase I analysis the HISTORY= option specifies the data set generated by MVPMODEL which contains the original data, the principal component scores, and multivariate summary statistics including $\text{[math]}$ and SPE.

The following graphical displays can be produced by PROC MVPMONITOR:

$\text{[math]}$ charts
squared prediction error (SPE) charts
contribution plots for all points or only for out-of-control points on the $\text{[math]}$ and SPE charts

Functionality for Phase II Analysis

In a Phase II analysis, only the loadings from the principal components model produced by the MVPMODEL procedure are used by the MVPMONITOR procedure, and the loadings data set is specified with the LOADINGS= option. The statistics charted by PROC MVPMONITOR are computed by applying the loadings to a data set with new process measurements that is specified with the DATA= option.

For a Phase II analysis, the following graphical displays can be produced by PROC MVPMONITOR:

score plots from the principal components analysis
$\text{[math]}$ charts
squared prediction error (SPE) charts
contribution plots for all points or only for out-of-control points on the $\text{[math]}$ and SPE charts

ODS Graphics must be enabled (for example, by specifying the ODS GRAPHICS ON statement before invoking the procedure) in order for the MVPMONITOR procedure to produce graphical output.

Note: This procedure is experimental.