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D toc

Excerpt

Generates the average value of rows in each group that meet a specific condition. Generated value is of Decimal type. 

Info

NOTE: When added to a transformation, this function is applied to the current sample. If you change your sample or run the job, the computed values for this function are updated. Transformations that change the number of rows in subsequent recipe steps do not affect the values computed for this step.

To perform a simple averaging of rows without conditionals, use the AVERAGE function. See AVERAGE Function.

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snippetBasic

D lang syntax
RawWrangletrue
Typeref
showNotetrue
WrangleTextpivot value: averageif(fineValue, finesCount >= 3) group:postal_code limit:1

averageif(fineValue, finesCount >= 3)

Output: Generates a two-column table containing the unique values for postal_code and the average of the fineValue column for that postal_code value when the finesCount is greater than or equal to 3. The limit parameter defines the maximum number of output columns.

D s
snippetSyntax

D lang syntax
RawWrangletrue
Typesyntax
showNotetrue
WrangleTextpivot value:averageif(col_ref, test_expression) [group:group_col_ref] [limit:limit_count]

averageif(col_ref, test_expression) [group:group_col_ref] [limit:limit_count]


ArgumentRequired?Data TypeDescription
col_refYstringReference to the column you wish to evaluate.
test_expressionYstringExpression that is evaluated. Must resolve to true or false

D s lang notes

For more information on the group and limit parameter, see Pivot Transform.

col_ref

Name of the column whose values you wish to use in the calculation. Column must be a numeric (Integer or Decimal) type.

D s
snippetusage

Required?Data TypeExample Value
YesString that corresponds to the name of the columnmyValues

test_expression

This parameter contains the expression to evaluate. This expression must resolve to a Boolean (true or false) value.

D s
snippetusage

Required?Data TypeExample Value
YesString expression that evaluates to true or false(LastName == 'Mouse' && FirstName == 'Mickey')

 

D s
snippetExamples

Example - Conditional Calculation Functions

Include Page
EXAMPLE - Conditional Calculations Functions
EXAMPLE - Conditional Calculations Functions

D s also
labelaggregate