CAPABILITY Procedure Enhancements

The CAPABILITY procedure supports several new options. The CDFPLOT, COMPHISTOGRAM, HISTOGRAM, PPPLOT, PROBPLOT, and QQPLOT statements support the following new options for specifying titles and footnotes in graphs that are produced by using ODS Graphics:

You can use these options to specify your own graph titles and footnotes without modifying ODS graph templates or using the ODS Graphics Editor.

The CDFPLOT, COMPHISTOGRAM, HISTOGRAM, PROBPLOT, and QQPLOT statements support the following new options for displaying reference lines at the values of computed statistics:

  • STATREF= specifies keywords that identify the statistics.

  • CSTATREF= specifies the colors of the reference lines.

  • LSTATREF= specifies the line types of the reference lines.

  • STATREFLABELS= specifies labels for the reference lines.

  • STATREFSUBCHAR= specifies a substitution character for incorporating statistic values into reference line labels.

For example, specifying STATREF=MEAN in a HISTOGRAM statement produces a histogram that has a vertical reference line at the mean of the data.

The COMPHISTOGRAM and HISTOGRAM statements support the new CLIPCURVES option, which clips fitted distribution curves that extend above the highest histogram bar. This eliminates compression of the histogram bars caused by extremely high fitted curve peaks.

The OUTPUT statement supports the following new options:

  • CIPCTLDF= computes distribution-free confidence limits for percentiles that you request by specifying the PCTLPTS= option.

  • CIPCTLNORMAL= computes confidence limits that assume normality for percentiles that you request by specifying the PCTLPTS= option.

  • PCTLGROUP= controls how variables that you request by specifying the PCTLPTS= option are grouped in the OUTPUT data set.

In addition, the CHREF=, CVREF=, LHREF=, and LVREF= options have been enhanced. These options now accept lists of values so that different reference lines in a single graph can be displayed by using different colors and line types. They are available in the CDFPLOT, COMPHISTOGRAM, HISTOGRAM, PPPLOT, PROBPLOT, and QQPLOT statements.