Specifying Known Values for IRCHART
/****************************************************************/
/* S A S S A M P L E L I B R A R Y */
/* */
/* NAME: SHWIREX2 */
/* TITLE: Specifying Known Values for IRCHART */
/* PRODUCT: QC */
/* SYSTEM: ALL */
/* KEYS: Shewhart Charts, Individual Measurements and Moving */
/* Range Charts, */
/* PROCS: SHEWHART */
/* DATA: */
/* */
/* REF: SAS/QC Software: Usage and Reference, Version 6, */
/* First Edition, Volume 1 and Volume 2 */
/* */
/****************************************************************/
data Engines;
input ID Weight @@;
label Weight='Engine Weight (lbs)'
ID ='Engine ID Number';
datalines;
1711 1270 1712 1258 1713 1248 1714 1260
1715 1263 1716 1260 1717 1259 1718 1240
1719 1260 1720 1246 1721 1238 1722 1253
1723 1249 1724 1245 1725 1251 1726 1252
1727 1249 1728 1274 1729 1258 1730 1268
1731 1248 1732 1295 1733 1243 1734 1253
1735 1258
;
ods graphics on;
title 'Specifying Standard Process Mean and Standard Deviation';
proc shewhart data=Engines;
irchart Weight*ID /
odstitle = title
mu0 = 1250
sigma0 = 12
xsymbol = mu0
markers;
run;
data Enginelimits;
length _var_ _subgrp_ _type_ $8;
_var_ = 'Weight';
_subgrp_ = 'id';
_limitn_ = 2;
_type_ = 'STANDARD';
_mean_ = 1250;
_stddev_ = 12;
run;
proc shewhart data=Engines limits=Enginelimits;
irchart Weight*ID / xsymbol=mu0;
run;