The SHEWHART Procedure

Overview

You can now specify variables from the input data set to be plotted as overlays on control charts. You can control the appearance of the symbols used to plot the overlay variables and the lines connecting the plotted points. You can also specify uniform resource locators (URLs) to be associated with overlay points. When graphics output is directed to HTML, these URLs can provide links to other Web pages.

Using new LIMITS= data set variables, you can vary the appearance of a control chart from one phase to another:

The _CFRAME_ variable specifies the color of the area enclosed by the axes and frame within a phase.
The _CINFILL_ variable specifies the color of the area inside the upper and lower control limits within a phase.
The _CLIMITS_ variable specifies the color for the control limits and central line within a phase.
The _WLIMITS_ variable specifies the width for the control limits and central line within a phase.
The _LLMITS_ variable specifies the line type for the control limits within a phase.

The new BOXSTYLE=POINTSSCHEMATIC option in the BOXCHART statement combines the POINTS and SCHEMATIC box styles. The MRRESTART option in the IRCHART statement restarts the moving range computation when a missing value is encountered. The TESTRESET= and TEST2RESET= options reset tests for special causes on the primary and secondary control charts at specified subgroups.

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