ArcGIS Pro 3.2 API Reference Guide
ArcGIS.Core.Geometry Namespace / Unit Class / ConversionFactor Property
Example

In This Topic
    ConversionFactor Property
    In This Topic
    Gets the conversion factor of the unit.
    Syntax
    public virtual double ConversionFactor {get;}
    Public Overridable ReadOnly Property ConversionFactor As Double
    Remarks
    Conversion factor is defined as follows:

    Linear: meters per unit.

    Area: square meters per unit.

    Angular: radians per unit. Grid: Always 0. There is no way to convert between grid units.

    Example
    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)
    }
    
    LinearUnit - Create a LinearUnit with a factory code
    try
    {
      // create a british 1936 foot
      var britFoot = LinearUnit.CreateLinearUnit(9095);
      string unitName = britFoot.Name;                        //  "Foot_British_1936"
      double conversionFactor = britFoot.ConversionFactor;    // 0.3048007491
      double metersPerUnit = britFoot.MetersPerUnit;
      int factoryCode = britFoot.FactoryCode;                 // 9095
    
      // convert 10 british 1936 feet to centimeters
      double val = britFoot.ConvertTo(10, LinearUnit.Centimeters);
    
      // convert 10 m to british 1936 feet
      val = britFoot.ConvertFromMeters(10);
    }
    catch (ArgumentException)
    {
      // ArgumentException will be thrown by CreateLinearUnit
      // in the following scenarios:
      // - if the factory code used is a non-linear 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)
    }
    
    LinearUnit - Create a Custom LinearUnit
    // create a custom linear unit - there are 0.33 meters per myLinearUnit
    var myLinearUnit = LinearUnit.CreateLinearUnit("myCustomLinearUnit", 0.33);
    string name = myLinearUnit.Name;                          // myCustomLinearUnit
    double convFactor = myLinearUnit.ConversionFactor;        // 0.33
    int code = myLinearUnit.FactoryCode;                      // 0 for custom units
    double metersUnit = myLinearUnit.MetersPerUnit;           // 0.33
    string toString = myLinearUnit.ToString();                // same as Name - myCustomLinearUnit
    
    // convert 10 centimeters to myLinearUnit 
    double convertedVal = LinearUnit.Centimeters.ConvertTo(10, myLinearUnit);
    
    
    // get the wkt
    string lu_wkt = myLinearUnit.Wkt;
    
    // create an angular unit from this wkt
    var anotherLinearUnit = LinearUnit.CreateLinearUnit(lu_wkt);
    // anotherLinearUnit.ConversionFactor = 0.33
    // anotherLinearUnit.FactoryCode = 0    
    // anotherLinearUnit.MetersPerUnit = 0.33
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3 or higher.
    See Also