/// <summary>
/// Initializes a new instance of the <see cref="KeyedMatrix{TKey}" /> class.
/// </summary>
/// <param name="matrix">The matrix which holds the keys and data to copy into this new matrix</param>
protected KeyedRowColumnMatrix(IList <TRowKey> rowKeys, IList <TColumnKey> columnKeys, KeyedRowColumnMatrix <TRowKey, TColumnKey> matrix)
{
IEnumerable <TRowKey> unionOfRowKeys = rowKeys.Union(matrix.RowKeys);
IEnumerable <TColumnKey> unionOfColumnKeys = columnKeys.Union(matrix.ColumnKeys);
this.CheckAndAddKeys(unionOfRowKeys, unionOfColumnKeys);
foreach (TRowKey rowKey in matrix.RowKeys)
{
foreach (TColumnKey columnKey in matrix.ColumnKeys)
{
this.At(rowKey, columnKey, matrix.At(rowKey, columnKey));
}
}
}
/// <summary>
/// Creates a matrix which contains values from the requested sub-matrix
/// </summary>
/// <param name="rowsToInclude">A list of the keys of rows to include in the new matrix</param>
/// <param name="columnsToInclude">A list of the keys of columns to include in the new matrix</param>
/// <returns>A KeyedMatrix which contains values from the requested sub-matrix</returns>
public KeyedRowColumnMatrix <TRowKey, TColumnKey> SubMatrix(IList <TRowKey> rowsToInclude, IList <TColumnKey> columnsToInclude)
{
KeyedRowColumnMatrix <TRowKey, TColumnKey> subMatrix = new KeyedRowColumnMatrix <TRowKey, TColumnKey>(rowsToInclude, columnsToInclude);
foreach (TRowKey rowKey in rowsToInclude)
{
foreach (TColumnKey columnKey in columnsToInclude)
{
subMatrix.At(rowKey, columnKey, this.At(rowKey, columnKey));
}
}
return(subMatrix);
}
