Combination (BCombination)
This component works behind the scenes to define how to combine multiple pieces of data. When used for aggregation, it defines
how the
A combination excludes data with an invalid status, unless everything being combined has an invalid status. Invalid status values are: disabled, down, fault, stale and null.
Aggregation and rollup options
This component is responsible for the list of options to configure the Aggregation and Rollup properties on various components and widgets in the framework.
Figure 75. Aggregation drop-down list on an Analytic Data Definition
To view one of these Property Sheets, open the Analytic Data Manager (double-click ), right-click a definition, and click .
Combination values
| Value | Description |
|---|---|
| And | Logical “and” of Boolean values. |
| Avg | The statistical mean, which is determined by adding all of the values together and dividing by the number of values. |
| Count | The number or quantity of values in a combination. |
| First | The first value in a combination. |
| Last | The last value in a combination. |
| Max | The largest value in a numeric combination. |
| Median | The value in the middle of a sorted numeric combination. It is the number that separates the higher half from the lower half. |
| Min | The smallest value in a numeric combination. |
| Mode | Statistically, the most frequently-occurring number in the combination. |
| Or | Logical “or” of Boolean values. |
| Range | Statistically, the difference between the largest and smallest values in the combination. |
| Sum | The result of adding together all values in the combination. |
| Load factor | The measure of utilization rate. |
| Standard deviation | The standard deviation calculated for all values. |