Output Data Sets :: SAS/QC(R) 13.1 User's Guide

Output Data Sets

Subsections:

OUTHISTORY= Data Set
OUTTABLE= Data Set

OUTHISTORY= Data Set

The OUTHISTORY= data set contains all the variables in the input data set plus new variables that contain the principal component scores, residuals, and other computed values listed in Table 13.10.

Table 13.10: Computed Variables in the OUTHISTORY= Data Set

Variable	Description
Prin1–Prinj	Principal component scores
R_ $var1$ –R_ $varp$	Residuals
_NOBS_	Number of observations used in the analysis
_SPE_	Squared prediction error (SPE)
_TSQUARE_	$T^2$ statistic computed from principal component scores

The names of the score variables are formed by concatenating the value given by the PREFIX= option (or the default Prin, if PREFIX= is not specified) and the numbers 1, 2, …, j, where j is the number of principal components in the model.

The names of the residual variables are formed by concatenating the value given by the RPREFIX= option (or the default R_, if RPREFIX= is not specified) and the names of the process variables used in the analysis. Residual variables are created only when the number of principal components in the model is less than the number of process measurement variables in the input data set.

OUTTABLE= Data Set

You can save control chart statistics, control limits, and related information by specifying the OUTTABLE= option in a SCORECHART, SPECHART, or TSQUARECHART statement. Each chart statement produces OUTTABLE= data sets containing different variables. Table 13.11, Table 13.12, and Table 13.13 list the variables that are contained in the three types of TABLE= data set.

Table 13.11: Score Chart OUTTABLE= Data Set Variables

Variable	Description
`_COMP_`	Principal component number
`_EXLIM_`	Flag to indicate control limit was exceeded
`_LCL_`	Lower control limit
`_MEAN_`	Center line
`_SCORE_`	Principal component score
series	SERIES variable, if specified
`_SIGMAS_`	Multiple of score standard deviation used to compute control limits
time	TIME variable, if specified
`_UCL_`	Upper control limit

Table 13.12: SPE Chart OUTTABLE= Data Set Variables

Variable	Description
`_ALPHA_`	Probability ( $\alpha$ ) of exceeding control limits
`_EXLIM_`	Flag to indicate control limit was exceeded
`_LCL_`	Lower control limit
`_MEDIAN_`	Center line
residuals	Residual variables
series	SERIES variable, if specified
`_SPE_`	Squared prediction error (SPE) statistic
time	TIME variable, if specified
`_UCL_`	Upper control limit

Table 13.13: $T^2$ Chart OUTTABLE= Data Set Variables

Variable	Description
`_ALPHA_`	Probability ( $\alpha$ ) of exceeding control limits
`_EXLIM_`	Flag to indicate control limit was exceeded
`_LCL_`	Lower control limit
`_MEDIAN_`	Center line
residuals	Residual variables
series	SERIES variable, if specified
time	TIME variable, if specified
`_TSQUARE_`	$T^2$ statistic
`_UCL_`	Upper control limit

The MVPMONITOR Procedure

Output Data Sets

OUTHISTORY= Data Set

OUTTABLE= Data Set