You can set the properties below to configure parameters for your i5SPC chart template in SAP Manufacturing Integration and Intelligence (SAP MII).
The following table lists the parameters for an i5SPC chart:
Property Name | Parameter Name | Data Type | Default Value | Use |
---|---|---|---|---|
Subgroup Size | SubgroupSize | Integer | 1 | The number of raw data points to be included in each chart point. |
Sample Size | SampleSize | Integer | 100 | For attribute SPC chart types, this is the size of the sample from which you are counting defects. |
Lambda | Lambda | Floating point | 1 | For exponentially weighted moving average (EWMA) SPC chart types, this is a value between zero and one to weight the data when you compute a moving average. The EWMA chart detects small process shifts. This value is related to the size of the shift you want to detect. Smaller values detect smaller process shifts. Values between .05 and .25 work well; try .08, .1, and .15. |
Use Avg. of All Subgroups for 1st Point Calculation | UseSubGroupAvg | Boolean | Used to calculate the first point on the EWMA chart. If the checkbox is selected, then in the formula,, = Average else =0. | |
Upper Chart Sigma Coefficient | UpperSigmaCoefficient | Integer | Statistical value to used to calculate the coefficient of sigma difference in upper chart | |
Lower Chart Sigma Coefficient | LowerSigmaCoefficient | Integer | Statistical value to used to calculate the coefficient of sigma difference in lower chart | |
Lower Limit of Box | BoxLowerLimit | Floating point | 25 | For Box-Whisker SPC chart types, enter the lower point for the box which is typically the first quartile. |
Upper Limit of Box | BoxUpperLimit | Floating point | 75 | For Box-Whisker SPC chart types, enter the upper point for the box which is typically the third quartile. |
Whisker Lower Limit | WhiskerLowerLimit | Floating point | 0 | For Box-Whisker SPC chart types, enter the lower whisker point which is typically zero percent. |
Whisker Upper Limit | WhiskerUpperLimit | Floating point | 100 | For Box-Whisker SPC chart types, enter the upper whisker point which is typically 100 percent. |
Histogram Cell Count | HistogramCellCount | Integer | 10 | For Histogram SPC chart types, enter the number of bars, or buckets, in the histogram. |
Tolerance Type | ToleranceType | Integer | 0 | Enter zero for bilateral tolerance, one for high or upper level unilateral tolerance which is the target value for the upper specification limit, or negative one for low unilateral tolerance which is the target value to the lower specification. |
You can set these properties for your i5SPC chart template on the Parameters screen in the SAP MII Workbench and change these parameter values using web page scripting. For details, see Web Page Scripting for i5SPCCharts.