/// <summary>
/// Transforms a matrix of key-value pairs (where the first column
/// denotes a key, and the second column a value) into their integer
/// vector representation.
/// </summary>
/// <param name="values">A 2D matrix with two columns, where the first column contains
/// the keys (i.e. "Date") and the second column the values (i.e. "14/05/1988").</param>
///
/// <returns>A vector of integers where each element contains the translation
/// of each respective row in the given <paramref name="values"/> matrix.</returns>
///
public int[] Transform(string[,] values)
{
int rows = values.Rows();
int cols = values.Columns();
if (cols != 2)
{
throw new DimensionMismatchException("values", "The matrix should contain two columns. The first column should contain the key, and the second should contain the value.");
}
int[] result = new int[rows];
for (int i = 0; i < rows; i++)
{
result[i] = Columns[values[i, 0]].Transform(values[i, 1]);
}
return(result);
}