ScaleMaps

Full name Microsoft.VisualBasic.Math.ScaleMaps Assembly Microsoft.VisualBasic.Runtime Members 8

01 Syntax

Microsoft.VisualBasic.Math.ScaleMaps

02 Methods

Name	Overloads	Summary
TrimRanges	1	Trims the data ranges, if n in Dbl vector is less than min, then set n = min; else if n is greater than max, then set n value to max, else do nothing.
GenerateMapping	3	Linear mappings the vector elements in to another scale within specifc range from parameter Level.
Log2Ranks	1	apply of the log transform of the data and then run linear scale
Scale	1	Function centers and/or scales the columns of a numeric matrix.
LogLevels	1
MapHelper	1

03 Members

method TrimRanges #

TrimRanges(Double(), Double, Double)

Trims the data ranges, if n in Dbl vector is less than min, then set n = min; else if n is greater than max, then set n value to max, else do nothing.

Parameters

Name	Type	Description
`Dbl`	`Double()`	-
`min`	`Double`	-
`max`	`Double`	-

method GenerateMapping #

GenerateMapping(IEnumerable(Of Double), Int32, Int32)

Linear mappings the vector elements in to another scale within specifc range from parameter Level. (如果每一个数值之间都是相同的大小，则返回原始数据，因为最大值与最小值的差为0，无法进行映射的创建（会出现除0的错误）)

Remarks

为了要保持顺序，不能够使用并行拓展

Parameters

Name	Type	Description
`data`	`IEnumerable(Of Double)`	Your input numeric vector.
`Level`	`Int32`	The scaler range.
`offset`	`Int32`	The default scaler range output is [1, Level], but you can modify this parameter value for moving the range to [offset, Level + offset]. (默认是 [1, Level]，当offset的值为0的时候，则为[0, Level-1]，当然这个参数也可以使其他的值)

method GenerateMapping overload 2 #

GenerateMapping(IEnumerable(Of Int32), Int32, Int32)

如果每一个数值之间都是相同的大小，则返回原始数据，因为最大值与最小值的差为0，无法进行映射的创建（会出现除0的错误）

Remarks

为了要保持顺序，不能够使用并行拓展

Parameters

Name	Type	Description
`data`	`IEnumerable(Of Int32)`	-

method Log2Ranks #

Log2Ranks(IEnumerable(Of Double), Int32)

apply of the log transform of the data and then run linear scale

Parameters

Name	Type	Description
`data`	`IEnumerable(Of Double)`	-
`Level`	`Int32`	-

method Scale #

Scale(IEnumerable(Of Double), Boolean, Boolean)

Function centers and/or scales the columns of a numeric matrix.

Parameters

Name	Type	Description
`data`	`IEnumerable(Of Double)`	numeric matrix
`center`	`Boolean`	either a logical value or a numeric vector of length equal to the number of columns of x
`isScale`	`Boolean`	either a logical value or a numeric vector of length equal to the number of columns of x

method LogLevels #

LogLevels(IEnumerable(Of Double), Int32, Int32)

method GenerateMapping overload 3 #

GenerateMapping(IEnumerable(Of Int64), Int32)

method MapHelper #

MapHelper(IEnumerable(Of T))