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TDenseMtxVec.NormL2 Method ([In] TDenseMtxVec, bool)
TDenseMtxVec Class  TDenseMtxVec Members  Dew.Math Namespace  NormL2 Method  Example  See Also
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The L2-norm.

Syntax
C#
Visual Basic
public double NormL2([In] TDenseMtxVec Vec, bool RelativeError);
Returns

L2 norm, defined by ||V-Vec||, where V is calling vector.

Remarks

If the NormL2 is called without any parameters, the NormL2 calculates the norm of calling vector. The L2 norm of ||V-Vec|| is defined by the formula: 

 

 

If RelativeError is true then the computed norm is divided by the norm of V, and the function returns the "relative error": 

 

 

 

See Also
Example
using Dew.Math; using Dew.Math.Units; namespace Dew.Examples() { void Example() { TVec a,b; MtxVec.CreateIt(out a, out b); try { a.SetIt(false, new double[] {1,2,3,4}); a.SetIt(false, new double[] {4,3,2,1}); double c = a.NormL2(b,true); } finally { MtxVec.FreeIt(ref a,ref b); } } }
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