You can add a chart to a display in two ways:
From the Insert menu – with this option you select the type of chart to insert, and then configure the chart options in the configuration panel specific to that type of chart. With this method, the data source for the chart must be specified in the configuration dialog box. How?
Using natural presentation – with this option you select the data source and then assign the type of chart that will use the data source. The chart is inserted with its default template. You do not have to configure the chart with this method unless you want to make additional changes. How?
Each type of chart has configurable properties. If the chart has already been added, you can access the configuration panel by double-clicking the chart (while in Configuration mode). The configurable properties are similar from one chart to the next, but in some cases certain properties are named differently, and some charts have specific features that are unique. The basic properties for SPC charts include the following:
General settings – the chart name, title, background color/image settings, and control line options.
Data source settings – the specified data source, data source columns/subgroup settings, bad data handling options, and data export settings.
Chart-specific settings – options for Tool Tips and control limits.
Alarm-indication settings – alarm settings. Alarm-indication is not applicable to all chart types.
Axis settings – options for x and y axes.
Legend – display options for the chart's legend.
Font – settings for the font type and size.
When you configure options for a chart, you can specify whether you want control limits to be displayed, and how you want control limits to be calculated. Control limits are lines on the chart that are used to determine whether variation on a chart is caused by special or common causes. Control limits are displayed on the chart as the upper control limit (UCL), lower control limit (LCL), center line (CL), and warning lines (WL). A point that falls outside of the upper or lower control limits is considered a special cause.
The options for control limit calculation are as follows:
Control limits are calculated automatically from the data source.
You enter the values for UCL, CL, and LCL, or set the data source that stores these values.
Control limits are based on standard deviation or mean values that you enter.
In addition to the control limits shown on each chart, descriptive statistics can be used to analyze the stability and performance of a process. A different set of descriptive statistics is calculated for each type of chart. You can see a table of the statistics when you export the chart data to a Quick Report. How?
For a list of all descriptive statistics used in the Quality (SPC) charts, along with descriptions and calculations, see Quality Chart Formula Reference.
