Maintaining Graph and Display Preferences

To define graph preferences, use the Graph Preferences component (GRAPH_PREF). This topic discusses how to maintain graph and display preferences.

Page Name

Definition Name

Usage

Define Graph Preferences Page

QS_GRSET

Define the settings for calculations and the defaults for graphic displays for new graph preferences or change settings on predefined graph preferences. The online graphic displays and statistical content are determined by how you define these preferences. At run time these settings remain static and cannot be changed by the user.

If you are using the Quality application client offline against an extracted or user-defined data set, the graph type is selectable and certain settings can be changed by using the Modify Graph menu option from the Quality application client toolbar.

Statistic Selections Page

QS_STATSELECT_PNL

Associate statistics with control charts, histograms, or Pareto charts.

Use the Define Graph Preferences page (QS_GRSET) to define the settings for calculations and the defaults for graphic displays for new graph preferences or change settings on predefined graph preferences.

The online graphic displays and statistical content are determined by how you define these preferences. At run time these settings remain static and cannot be changed by the user.If you are using the Quality application client offline against an extracted or user-defined data set, the graph type is selectable and certain settings can be changed by using the Modify Graph menu option from the Quality application client toolbar.

Navigation:

Quality > Define Methods and Procedures > Graph Preferences > Define Graph Preferences

Field or Control

Description

Graph Preference ID

A sequential ID that is automatically assigned to a graph by the system appears.

Graph Preference Name

Enter a user-defined name for the graph.

Default Working Graph

Select the default graph that you want to view when performing online operations, such as data entry and alarm review. Options are: Control Chart, Histogram, and Pareto Chart.

Default Pareto Chart Item

Select the attribute type that you want to plot on the Pareto Chart. Options are: Control Test Violations, Corrective Actions, Defects, and Probable Causes.

Pareto Cell Display Limit

Enter the number of cells to display based upon cell count and the graphing order that you select.

Bar Graph Display Limit

Enter the number of bars to display based on the statistics value and the graphing order that you select.

Display Control Chart Alarms

Select to activate alarm point enunciation on each chart. Alarms are indicated on a separate (stacked) bar graph located below the control chart. The charts are arranged so that alarms (bars) will line up for each plot point on the control chart. The absence of a bar indicates no alarms for that point, a bar extending above the x-axis indicates an alarm charged against the means chart, and a bar extending below the x-axis indicates an alarm against the variance chart. If this option is not selected then the bar graph will not appear.

Indicate Specs on Histogram

Select to overlay the current characteristic specification limits on the histogram. For online graphs, the specification limits are indicated in the cell listing area and not actually drawn on the graph.

Statistics List

Click this link to access the Statistic Selections page, where you can select the statistics that you want to associate with control charts, histograms, or Pareto charts and the order in which the statistics appear.

Use the Statistic Selections page (QS_STATSELECT_PNL) to associate statistics with control charts, histograms, or Pareto charts.

Navigation:

Click the Statistics List link on the Define Graph Preferences page.

This example illustrates the fields and controls on the Statistic Selections page. You can find definitions for the fields and controls later on this page.

 Statistic Selections page

Use the scroll function to display all statistics and associated descriptions that are available in the Statistics Catalog. Click the different statistics links to select and place them into the list for the graphic or display. The following table shows the 44 statistics that are available on the Statistic Selections page.

Statistic

Statistic Description

Data Type Qualifier

MEAN

Mean.

Any

OBSRV

Observations.

Any

MINIMUM

Minimum.

Any

MAXIMUM

Maximum.

Any

STDDEV

Std Dev (standard deviation).

Any

RANGE

Range.

Any

VARIANCE

Variance.

Any

STDERR

Std Error (standard error).

Any

COEFVAR

Coef Vars (coefficient variables).

Any

SKEWNESS

Skewness.

Any

KURTOSIS

Kurtosis.

Any

ZLOWER

Lwr Z Score (lower Z score).

Any

ZUPPER

Upr Z Score (upper Z score).

Any

LOWER3S

Lwr 3 Sigma (lower 3 Sigma).

Any

UPPER3S

Upr 3 Sigma (upper 3 Sigma).

Any

DISTYPE

Dist Type (distribution type).

Any

SUMX

Sum.

Any

SUMX2

Sum of Squares.

Any

SUMZ

Sum Sgrp Sizes (sum of subgroup sizes).

Any

SIZEN

Subgroup Size.

Any

Q1

Quartile 25%.

Any

MEDIAN

Median.

Any

Q3

Quartile 75%.

Any

AVEMEANS

X Dbl Bar (X double bar).

Any

AVEVARS

R Bar.

Variables

CP

Cp.

Variables

CPK

Cpk.

Variables

CPL

Cpl.

Variables

CPU

Cpu.

Variables

CPK90

Cpk @ 90%.

Variables

PCSPEC

Cr.

Variables

PCLOWER

Est % Below Spec (estimated percent below specification).

Variables

PCUPPER

Est % Above Spec (estimated percent above specification).

Variables

PCTOTAL

Est % Total (estimated percent total).

Variables

SUMDEF

Sum Defects.

Defects

DEFPH

Defects/100.

Defects

DEFPT

Defects/1000.

Defects

DEFPM

Defects/Mil.

Defects

DEFPU

Defects/Unit.

Defects

LSL

LSL.

Any

USL

USL.

Any

FACT1

Factor 1.

Any

FACT2

Factor 2.

Any

TRANS

Transform.

Any