|
public static Reshape ( |
||
| v | Vector to reshape. | |
| rows | int | Height of the matrix to return |
| columns | int | Width of the matrix to return |
| byVector | VectorType | Direction to process, i.e. Row = Fill Down then Right, or Col = Fill Right then Down |
| return | Matrix | |
public static Matrix Reshape(Vector v, int rows, int columns, VectorType byVector = VectorType.Row)
{
if (rows * columns != v.Length)
throw new InvalidOperationException(
string.Format("Cannot reshape Vector of length {0} into a {1} x {2} Matrix.", v.Length, rows, columns));
Matrix m = new Matrix(rows, columns);
int counter = 0;
switch (byVector)
{
case VectorType.Row:
{
for (int i = 0; i < columns; i++)
for (int k = 0; k < rows; k++)
m[k, i] = v[counter++];
} break;
case VectorType.Col:
{
for (int i = 0; i < rows; i++)
for (int k = 0; k < columns; k++)
m[i, k] = v[counter++];
} break;
}
return m;
}
/// <summary>
/// Reshapes the given Vector into a Matrix form given the specified dimension.
/// <para>Reads from the source vector and repopulates from left to right when <paramref name="vectorType"/> equals 'Col' otherwise uses top down approach.</para>
/// </summary>
/// <param name="source"></param>
/// <param name="dimension">If the <paramref name="vectorType"/> equals 'Col' the <paramref name="dimension"/> becomes the column width otherwise it is row height.</param>
/// <param name="vectorType">Unit type of the dimension to use when rebuilding the Matrix.</param>
/// <param name="fillType">Direction to process, i.e. Row = Fill Down then Right, or Col = Fill Right then Down</param>
/// <returns>Matrix.</returns>
public static Matrix Reshape(this Vector source, int dimension, VectorType vectorType = VectorType.Col, VectorType fillType = VectorType.Row)
{
return(Matrix.Reshape(source, dimension, vectorType, fillType));
}