/// <summary>
/// Calculates the inverse of matrix. Returns null if non-invertible.
/// </summary>
public virtual Matrix Invert()
{
var inverse = MatrixFunctions.Invert(this.InnerMatrix);
if (inverse == null)
{
return(null);
}
return(new Matrix(inverse));
}
// TODO: Test
/// <summary>
/// Creates projection matrix for the specified subspace.
/// </summary>
public static double[,] CreateProjectionMatrix(double[,] subspace)
{
var subspaceTranspose = MatrixFunctions.Transpose(subspace);
double[,] value = MatrixFunctions.Multiply(subspaceTranspose, subspace);
value = MatrixFunctions.Invert(value);
value = MatrixFunctions.Multiply(value, subspaceTranspose);
value = MatrixFunctions.Multiply(subspace, value);
return(value);
}
