ChartDataTransforms

ClassChartGuruChartGuru

public static class ChartDataTransforms

Reusable typed transforms for filtering, deriving, aggregating, and smoothing chart data.

Methods

Calculate(ChartDataFrame, string, Func<ChartDataRow, T>, ChartColumnType?)

public static ChartDataFrame Calculate<T>(ChartDataFrame frame, string outputName, Func<ChartDataRow, T> expression, ChartColumnType? type = null)

Evaluates each row to add or replace a typed calculated column, preserving the other columns.

Parameters

Name	Type
frame	ChartGuru.ChartDataFrame
outputName	System.String
expression	System.Func{ChartGuru.ChartDataRow,{T}}
type	System.Nullable{ChartGuru.ChartColumnType}

Returns

ChartGuru.ChartDataFrame

AggregateBy(ChartDataFrame, string, string, ChartAggregate, string)

public static ChartDataFrame AggregateBy(ChartDataFrame frame, string groupColumnName, string valueColumnName, ChartAggregate aggregate, string outputColumnName = null)

Groups rows by displayed key and validity, returning row counts or aggregates of valid numeric values.

Parameters

Name	Type
frame	ChartGuru.ChartDataFrame
groupColumnName	System.String
valueColumnName	System.String
aggregate	ChartGuru.ChartAggregate
outputColumnName	System.String

Returns

ChartGuru.ChartDataFrame

Rolling(ChartDataFrame, string, string, int, ChartWindowStatistic)

public static ChartDataFrame Rolling(ChartDataFrame frame, string sourceColumnName, string outputColumnName, int windowSize, ChartWindowStatistic statistic = ChartWindowStatistic.Mean)

Adds a numeric statistic over trailing row windows, ignoring invalid numeric values and marking empty windows invalid.

Parameters

Name	Type
frame	ChartGuru.ChartDataFrame
sourceColumnName	System.String
outputColumnName	System.String
windowSize	System.Int32
statistic	ChartGuru.ChartWindowStatistic

Returns

ChartGuru.ChartDataFrame

FacetBy(ChartDataFrame, string)

public static IReadOnlyList<ChartFacet> FacetBy(ChartDataFrame frame, string columnName)

Splits rows by displayed key and validity, preserving group discovery order and row order within each facet.

Parameters

Name	Type
frame	ChartGuru.ChartDataFrame
columnName	System.String

Returns

System.Collections.Generic.IReadOnlyList{ChartGuru.ChartFacet}