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SqlFunctions.Atan2 Method (Nullable<Double>, Nullable<Double>)

Returns the positive angle, in radians, between the positive x-axis and the ray from the origin through the point (x, y), where x and y are the two specified numerical values. The first parameter passed to the function is the y-value and the second parameter is the x-value.

Namespace:  System.Data.Objects.SqlClient
Assembly:  System.Data.Entity (in System.Data.Entity.dll)

[EdmFunctionAttribute("SqlServer", "ATN2")]
public static Nullable<double> Atan2(
	Nullable<double> arg1,
	Nullable<double> arg2


Type: System.Nullable<Double>
The y-coordinate of a point.
Type: System.Nullable<Double>
The x-coordinate of a point.

Return Value

Type: System.Nullable<Double>
An angle, measured in radians.

You cannot call this function directly. This function can only appear within a LINQ to Entities query.

This function is translated to a corresponding function in the database. For information about the corresponding SQL Server function, see ATN2 (Transact-SQL).

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.