Selector

Full name Microsoft.VisualBasic.Math.Quantile.Selector Assembly Microsoft.VisualBasic.Math.Core Members 7

String expression for select the sequence members by its numeric values, selector expression provider for CLI programming. (对输入的目标序列进行数量上面的选择的表达式)

00 Remarks

name	syntax	description
quantile selector	`quantile:p%`	`quantile:75%` means selector object if its value is greater than quantile 75%.
quartile selector	``Q1	2	3``	quartile selector only have 3 enumerate values: `Q1`, `Q2`, `Q3`, all of the values are UPPER_CASE.
rank selector	``desc:n	asc:n``	selector using object its rank order, desc:n for top n and asc:n for first n.

01 Syntax

Microsoft.VisualBasic.Math.Quantile.Selector

02 Methods

03 Members

method ApplySelector #

ApplySelector``1(Provider(Of ``0), String)

可以使用|管道进行组合使用

Type Parameters

Name	Description
`T`

Parameters

Name	Type	Description
`source`	Provider(Of ``0)	-
`exp$`	`String`	-

method SelectByQuantile #

SelectByQuantile``1(Provider(Of ``0), Double)

使用数量百分比来进行选择

Type Parameters

Name	Description
`T`

Parameters

Name	Type	Description
`source`	Provider(Of ``0)	-
`q#`	`Double`	-

method ApplySelector overload 2 #

ApplySelector(IEnumerable(Of T), Func(Of T, Double), String)

method ApplySelector #

ApplySelector(Selector+Provider(Of T), String)

method SelectByQuantile #

SelectByQuantile(Selector+Provider(Of T), Double)

method SelectByQuartile #

SelectByQuartile(Selector+Provider(Of T), QuartileLevels)

method SelectByRankAsc #

SelectByRankAsc(Selector+Provider(Of T), Int32, Boolean)