/// <summary>
/// Reads the named matrices from the file or stream.
/// </summary>
/// <param name="names">The names of the matrices to retrieve.</param>
/// <returns>
/// The named matrices from the file or stream. The key to the <see cref="IDictionary{T,K}"/>
/// is the matrix's name.</returns>
public IDictionary <string, Matrix <TDataType> > ReadMatrices(IEnumerable <string> names)
{
Stream stream;
if (_filename == null)
{
stream = _stream;
_stream.Seek(0, SeekOrigin.Begin);
}
else
{
stream = new BufferedStream(new FileStream(_filename, FileMode.Open, FileAccess.Read));
}
var parser = new MatlabParser <TDataType>(stream, names);
var file = parser.Parse();
if (_filename != null)
{
stream.Close();
stream.Dispose();
}
return(file.Matrices.ToDictionary(matrix => matrix.Key, matrix => matrix.Value));
}
/// <summary>
/// Reads the named matrix from the file or stream.
/// </summary>
/// <param name="matrixName">The name of the matrix to read.</param>
/// <returns>
/// A sparse or dense matrix depending on how the matrix
/// is defined in the Matlab file.
/// <see langword="null"/> is returned if a matrix with the requests name doesn't exist.
/// </returns>
public Matrix <TDataType> ReadMatrix(string matrixName)
{
Stream stream;
if (_filename == null)
{
stream = _stream;
_stream.Seek(0, SeekOrigin.Begin);
}
else
{
stream = new FileStream(_filename, FileMode.Open, FileAccess.Read);
}
var names = string.IsNullOrEmpty(matrixName) ? new string[] { } : new[] { matrixName };
var parser = new MatlabParser <TDataType>(stream, names);
var file = parser.Parse();
Matrix <TDataType> matrix = null;
if (string.IsNullOrEmpty(matrixName))
{
matrix = file.FirstMatrix;
}
else if (file.Matrices.ContainsKey(matrixName))
{
matrix = file.Matrices[matrixName];
}
if (_filename != null)
{
stream.Close();
stream.Dispose();
}
return(matrix);
}
/// <summary>
/// Reads the named matrix from the file or stream.
/// </summary>
/// <param name="matrixName">The name of the matrix to read.</param>
/// <returns>
/// If the matrix is stored as a sparse matrix, then a <see cref="SparseMatrix"/> is returned. Otherwise, a <see cref="DenseMatrix"/>
/// is returned. <see langword="null"/> is returned if a matrix with the requests name doesn't exist.
/// </returns>
public Matrix<float> ReadMatrix(string matrixName)
{
Stream stream;
if (_filename == null)
{
stream = _stream;
_stream.Seek(0, SeekOrigin.Begin);
}
else
{
stream = new FileStream(_filename, FileMode.Open, FileAccess.Read);
}
var names = string.IsNullOrEmpty(matrixName) ? new string[] { } : new[] { matrixName };
var parser = new MatlabParser(stream, names);
var file = parser.Parse();
Matrix<float> matrix = null;
if (string.IsNullOrEmpty(matrixName))
{
matrix = file.FirstMatrix;
}
else if (file.Matrices.ContainsKey(matrixName))
{
matrix = file.Matrices[matrixName];
}
if (_filename != null)
{
stream.Close();
stream.Dispose();
}
return matrix;
}
/// <summary>
/// Reads the named matrices from the file or stream.
/// </summary>
/// <param name="names">The names of the matrices to retrieve.</param>
/// <returns>
/// The named matrices from the file or stream.
/// </returns>
public Matrix<float>[] ReadMatrices(IEnumerable<string> names)
{
Stream stream;
if (_filename == null)
{
stream = _stream;
_stream.Seek(0, SeekOrigin.Begin);
}
else
{
stream = new BufferedStream(new FileStream(_filename, FileMode.Open, FileAccess.Read));
}
var parser = new MatlabParser(stream, names);
var file = parser.Parse();
var matrices = new Matrix<float>[file.Matrices.Count];
var i = 0;
foreach (var matrix in file.Matrices.Values)
{
matrices[i++] = matrix;
}
if (_filename != null)
{
stream.Close();
stream.Dispose();
}
return matrices;
}
