ArcGIS Pro 3.2 API Reference Guide
ArcGIS.Core.Geometry Namespace / AngularUnit Class / ConvertFromRadians Method
Angle in radians.
Example

In This Topic
    ConvertFromRadians Method
    In This Topic
    Converts a radian angle to the unit of this instance.
    Syntax
    public double ConvertFromRadians( 
       double radians
    )
    Public Function ConvertFromRadians( _
       ByVal radians As Double _
    ) As Double

    Parameters

    radians
    Angle in radians.

    Return Value

    Angle converted from radians.
    Example
    Getting vector azimuth
    Coordinate3D vector = new Coordinate3D(0, 7, 0);
    double azimuth = vector.Azimuth;      // azimuth = 0
    
    vector.SetComponents(1, 1, 42);
    azimuth = vector.Azimuth;
    double degrees = AngularUnit.Degrees.ConvertFromRadians(azimuth);       // degrees = 45
    
    vector.SetComponents(-8, 8, 2);
    azimuth = vector.Azimuth;
    degrees = AngularUnit.Degrees.ConvertFromRadians(azimuth);              // degrees = 315
    
    AngularUnit - Convert between degrees and radians
    // convert 45 degrees to radians
    double radians = AngularUnit.Degrees.ConvertToRadians(45);
    
    // convert PI to degrees
    double degrees = AngularUnit.Degrees.ConvertFromRadians(Math.PI);
    
    AngularUnit - Create an AngularUnit with a factory code
    try
    {
      // create a Grad unit
      var grad = AngularUnit.CreateAngularUnit(9105);
      string unitName = grad.Name;                        // Grad
      double conversionFactor = grad.ConversionFactor;    // 0.015708
      double radiansPerUnit = grad.RadiansPerUnit;
      int factoryCode = grad.FactoryCode;                 // 9105
    
      // convert 10 grads to degrees
      double val = grad.ConvertTo(10, AngularUnit.Degrees);
    
      // convert 10 radians to grads
      val = grad.ConvertFromRadians(10);
    }
    catch (ArgumentException)
    {
      // ArgumentException will be thrown by CreateAngularUnit in
      // the following scenarios:
      // - if the factory code used is a non-angular factory code
      //   (i.e. it corresponds to square meters which is an area unit code)
      // - if the factory code used is invalid
      //   (i.e. it is negative or doesn't correspond to any factory code)
    }
    
    AngularUnit - Create a Custom AngularUnit
    // custom unit - 3 radians per unit
    var myAngularUnit = AngularUnit.CreateAngularUnit("myCustomAngularUnit", 3);
    string Name = myAngularUnit.Name;                   // myCustomAngularUnit
    double Factor = myAngularUnit.ConversionFactor;     // 3
    int Code = myAngularUnit.FactoryCode;               // 0 because it is a custom angular unit
    double radiansUnit = myAngularUnit.RadiansPerUnit;  // 3
    
    // convert 10 degrees to my unit
    double converted = AngularUnit.Degrees.ConvertTo(10, myAngularUnit);
    // convert it back to degrees
    converted = myAngularUnit.ConvertTo(converted, AngularUnit.Degrees);
    
    // convert 1 radian into my angular units
    converted = myAngularUnit.ConvertFromRadians(1);
    
    // get the wkt
    string wkt = myAngularUnit.Wkt;
    
    // create an angular unit from this wkt
    var anotherAngularUnit = AngularUnit.CreateAngularUnit(wkt);
    // anotherAngularUnit.ConversionFactor = 3
    // anotherAngularUnit.FactoryCode = 0    
    // anotherAngularUnit.RadiansPerUnit = 3
    
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3 or higher.
    See Also