MatrixSize size = r.readMatrixSize(info);
numRows = size.numRows();
numColumns = size.numColumns();
// Start reading entries
int numEntries = size.numEntries();
int[] row = new int[numEntries];
int[] column = new int[numEntries];
double[] entry = new double[numEntries];
r.readCoordinate(row, column, entry);