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Summary calculations are aggregate functions used for sub-totals and totals. Summary calculations can be set in the Domain Designer or in the Ad Hoc view.
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In general, you can change the summary calculation of any measure. By default, Analytika™ Zoola™ summarizes fields of each datatype as follows:
Datatype | Default Summary | Description |
|---|---|---|
Numeric | Sum | Displays the sum of all values in the set. |
Date | CountAll | Displays the total number of values in the set. |
String | CountAll | Displays the number of values in the set. |
Boolean | CountAll | Displays the number of values in the set. |
Aggregate | AggregateFormula | For a calculated field that uses an aggregate function, uses the same aggregate formula as the summary. |
Combined | None | For a calculated field that combines an aggregate function with a non-aggregate function, the summary calculation is null. |
Select from the following options to set a measure's summary function in any type of view:
Function | Meaning | Available for |
|---|---|---|
AggregateFormula | For a calculation that uses an aggregate function, uses the same aggregate formula as the summary. | Aggregate |
Average | Displays the average of all values in the set. | Numeric |
CountAll | Displays the number of rows in the set. | Boolean, Date, Numeric, and String |
CountDistinct | Displays the number of unique values in the set. | Boolean, Date, Numeric, and String |
Custom | Allows you to enter an aggregate calculation for the summary. Only available for calculated fields and measures in the Ad Hoc Editor; not available for Domains. | Aggregate, Date, Numeric |
Max | Displays the highest value in the set. | Date, Numeric |
Median | Displays the median value of the set. | Date, Numeric |
Min | Displays the lowest value in the set. | Date, Numeric |
Mode | Displays the value that occurs most frequently in the set. | Boolean, Date, Numeric, and String |
None | The aggregate function is null; no summary function is displayed. | Aggregate, Boolean, Date, Numeric, and String |
Range | Displays the difference between the minimum and maximum values of the set. | Numeric |
RangeDays | Displays the difference in days between the minimum and maximum values of the set. | Date |
RangeHours | Displays the difference in hours between the minimum and maximum values of the set. | DateTime |
RangeMinutes | Displays the difference in minutes between the minimum and maximum values of the set. | DateTime |
RangeMonths | Displays the difference in months between the minimum and maximum values of the set. | Date |
RangeQuarters | Displays the difference in quarters between the minimum and maximum values of the set. | Date |
RangeSemis | Displays the difference in semi-annual periods between the minimum and maximum values of the set. | Date |
RangeWeeks | Displays the difference in weeks between the minimum and maximum values of the set | Date |
RangeYears | Displays the difference in years between the minimum and maximum values of the set. | Date |
Aggregate Formula | Uses the aggregate formula used to define the calculated field as the summary function, and sets the level appropriately for the context. | Aggregate |
StdDevP | Displays the standard deviation for the population of the set. | Numeric |
StdDevS | Displays the standard deviation on a sample for the set. | Numeric |
Sum | Displays the grand total for the set. | Numeric |
WeightedAverage | Displays the weighted average for the set, based on a second numeric field or expression. Only available for calculated fields and measures in the Ad Hoc Editor; not available for Domains. | Numeric |
Note the following about summaries:
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"Custom" only appears in the Change Summary context-menu if you have defined a custom function in the Create Calculated Field dialog box.
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