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Comment: Published by Scroll Versions from space DEV and version r093

D toc

Excerpt

Generates the standard deviation of values by group in a column that meet a specific condition.

Info

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

D s terms
areastat_sampling

  • This function is calculated across the entire population.

  • For more information on

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  • a sampled version of this function, see 

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D s

D s
snippetBasic

STDEVIF
d-codelang-syntax
RawWrangletrue
Typeref
showNotetrue
WrangleTextpivot value:
stdevif(testScores, testScores > 0) group:studentId limit:1

stdevif(testScores, testScores > 0)

Output:

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 Returns the standard deviation of the testScores

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 column when the testScores value is greater than 0.

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D s
snippetSyntax

:STDEVIF
d-codelang-syntax
RawWrangletrue
Typesyntax
showNotetrue
WrangleTextpivot value
:stdevif(col_ref, test_expression) [group:group_col_ref] [limit:limit_count]

stdevif(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

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