How to set control limits in SPC chart node?
Article ID: KB0081433
Updated On:
| Products | Versions |
|---|---|
| Spotfire Statistica | 13.0,13.2,13.3 |
Description
Control limits can be defined by the user or calculated from the data in SPC Charts with Alarming node.
Issue/Introduction
This articles talks about how to set control limits in SPC Charts with Alarming node.
Resolution
Under X Chart Control Limits tab of the node, click the drill-down of Control Limits, there are options including:
a. Use defined UCL and LCL
b. Calculate UCL and LCL
Note: Hover over to read the clarification on each option. If "Use defined UCL and LCL" is selected, you will need to have *_UCL and *_LCL matching variables in the input data.
For instance, if "Measures" is the characteristic variable name, "Measures_UCL" and "Measures_LCL" are the expected variable names for control limits when reading from the data.
a. Use defined UCL and LCL
b. Calculate UCL and LCL
Note: Hover over to read the clarification on each option. If "Use defined UCL and LCL" is selected, you will need to have *_UCL and *_LCL matching variables in the input data.
For instance, if "Measures" is the characteristic variable name, "Measures_UCL" and "Measures_LCL" are the expected variable names for control limits when reading from the data.
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