• Extreme Optimization
  • Features
  • Solutions
  • Documentation
  • QuickStart Samples
  • Sample Applications
  • Downloads
  • Technical Support
  • Download trial
  • How to buy
  • Blog
  • Company
  • Resources
• Documentation
  • Introduction
  • Deployment Guide
  • Configuration
  • Using Parallelism
  • Mathematics Library User's Guide
  • Vector and Matrix Library User's Guide
  • Data Analysis Library User's Guide
  • Statistics Library User's Guide
  • Data Access Library User's Guide
  • Reference
• Reference
  • Extreme
  • Extreme.Collections
  • Extreme.Data
  • Extreme.Data.Json
  • Extreme.Data.Matlab
  • Extreme.Data.R
  • Extreme.Data.Stata
  • Extreme.Data.Text
  • Extreme.DataAnalysis
  • Extreme.DataAnalysis.Linq
  • Extreme.Mathematics
  • Extreme.Mathematics.Algorithms
  • Extreme.Mathematics.Calculus
  • Extreme.Mathematics.Calculus.OrdinaryDifferentialEquations
  • Extreme.Mathematics.Curves
  • Extreme.Mathematics.Curves.Nonlinear
  • Extreme.Mathematics.Distributed
  • Extreme.Mathematics.Distributed.Cuda
  • Extreme.Mathematics.EquationSolvers
  • Extreme.Mathematics.FSharp
  • Extreme.Mathematics.Generic
  • Extreme.Mathematics.Generic.LinearAlgebra
  • Extreme.Mathematics.Generic.LinearAlgebra.Implementation
  • Extreme.Mathematics.Generic.LinearAlgebra.Providers
  • Extreme.Mathematics.Generic.SignalProcessing
  • Extreme.Mathematics.Implementation
  • Extreme.Mathematics.LinearAlgebra
  • Extreme.Mathematics.LinearAlgebra.Complex
  • Extreme.Mathematics.LinearAlgebra.Complex.Decompositions
  • Extreme.Mathematics.LinearAlgebra.Implementation
  • Extreme.Mathematics.LinearAlgebra.IO
  • Extreme.Mathematics.LinearAlgebra.IterativeSolvers
  • Extreme.Mathematics.LinearAlgebra.IterativeSolvers.Preconditioners
  • Extreme.Mathematics.LinearAlgebra.Providers
  • Extreme.Mathematics.LinearAlgebra.Sparse
  • Extreme.Mathematics.Optimization
  • Extreme.Mathematics.Optimization.Genetic
  • Extreme.Mathematics.Optimization.LineSearches
  • Extreme.Mathematics.Random
  • Extreme.Mathematics.SignalProcessing
  • Extreme.Numerics.FSharp
  • Extreme.Statistics
  • Extreme.Statistics.Distributions
  • Extreme.Statistics.IO
  • Extreme.Statistics.Linq
  • Extreme.Statistics.Multivariate
  • Extreme.Statistics.Random
  • Extreme.Statistics.Tests
  • Extreme.Statistics.TimeSeriesAnalysis
• Extreme.DataAnalysis.Linq
  • LinqExtensions Class
  • LinqExtensions.DataFrameGrouping(TKey, R, C) Class
  • LinqExtensions.DataFrameLookup(TKey, R, C) Class
  • LinqExtensions.Grouping(TKey, T) Class
  • LinqExtensions.Lookup(TKey, T) Class
• LinqExtensions Class
  • Methods
• Methods
  • Aggregate Method Overloads
  • Concat Method Overloads
  • GroupBy Method Overloads
  • Select Method Overloads
  • SelectMany Method Overloads
  • ToLookup Method Overloads
  • Where Method Overloads
• Where Method Overloads
  • Where(R, C) Method (DataFrame(R, C), Func(DataFrameRow(R, C), Boolean))
  • Where(R, C) Method (DataFrame(R, C), Func(DataFrameRow(R, C), Int32, Boolean))
  • Where(T) Method (Vector(T), Func(T, Boolean))
  • Where(T) Method (Vector(T), Func(T, Int32, Boolean))

LinqExtensionsWhere Method

Extreme Optimization Numerical Libraries for .NET Professional

Overload List

---

	Name	Description
	WhereR, C(DataFrameR, C, FuncDataFrameRowR, C, Boolean)	Filters the rows of a data frame based on a predicate.
	WhereR, C(DataFrameR, C, FuncDataFrameRowR, C, Int32, Boolean)	Filters the rows of a data frame based on a predicate. Each row's index is used in the logic of the predicate function.
	WhereT(VectorT, FuncT, Boolean)	Filters the elements of a vector based on a predicate.
	WhereT(VectorT, FuncT, Int32, Boolean)	Filters the elements of a vector based on a predicate. Each element's index is used in the logic of the predicate function.

Top

See Also

---

Reference

LinqExtensions Class

Extreme.DataAnalysis.Linq Namespace

Copyright © 2004-2018, Extreme Optimization. All rights reserved.
Extreme Optimization, Complexity made simple, M#, and M Sharp are trademarks of ExoAnalytics Inc.
Microsoft, Visual C#, Visual Basic, Visual Studio, Visual Studio.NET, and the Optimized for Visual Studio logo
are registered trademarks of Microsoft Corporation.