DataFrameStatFunctions.SampleBy Method
Definition
Important
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Overloads
| SampleBy<T>(Column, IDictionary<T,Double>, Int64) |
Returns a stratified sample without replacement based on the fraction given on each stratum. |
| SampleBy<T>(String, IDictionary<T,Double>, Int64) |
Returns a stratified sample without replacement based on the fraction given on each stratum. |
SampleBy<T>(Column, IDictionary<T,Double>, Int64)
Returns a stratified sample without replacement based on the fraction given on each stratum.
[Microsoft.Spark.Since("3.0.0")]
public Microsoft.Spark.Sql.DataFrame SampleBy<T>(Microsoft.Spark.Sql.Column column, System.Collections.Generic.IDictionary<T,double> fractions, long seed);[<Microsoft.Spark.Since("3.0.0")>]
member this.SampleBy : Microsoft.Spark.Sql.Column * System.Collections.Generic.IDictionary<'T, double> * int64 -> Microsoft.Spark.Sql.DataFramePublic Function SampleBy(Of T) (column As Column, fractions As IDictionary(Of T, Double), seed As Long) As DataFrameType Parameters
- T
Stratum type
Parameters
- column
- Column
Column that defines strata
- fractions
- IDictionary<T,Double>
Sampling fraction for each stratum. If a stratum is not specified, we treat its fraction as zero.
- seed
- Int64
Random seed
Returns
DataFrame object
- Attributes
Applies to
SampleBy<T>(String, IDictionary<T,Double>, Int64)
Returns a stratified sample without replacement based on the fraction given on each stratum.
public Microsoft.Spark.Sql.DataFrame SampleBy<T>(string columnName, System.Collections.Generic.IDictionary<T,double> fractions, long seed);member this.SampleBy : string * System.Collections.Generic.IDictionary<'T, double> * int64 -> Microsoft.Spark.Sql.DataFramePublic Function SampleBy(Of T) (columnName As String, fractions As IDictionary(Of T, Double), seed As Long) As DataFrameType Parameters
- T
Stratum type
Parameters
- columnName
- String
Column name that defines strata
- fractions
- IDictionary<T,Double>
Sampling fraction for each stratum. If a stratum is not specified, we treat its fraction as zero.
- seed
- Int64
Random seed
Returns
DataFrame object