public virtual DMatrixRMaj extract()
{
DMatrixRMaj ret = new DMatrixRMaj(row1 - row0, col1 - col0);
for (int i = 0; i < ret.numRows; i++)
{
for (int j = 0; j < ret.numCols; j++)
{
ret.set(i, j, get(i, j));
}
}
return(ret);
}
/**
* Give a string of numbers it returns a DenseMatrix
*/
//@SuppressWarnings("StringSplitter")
public static DMatrixRMaj parse_DDRM(String s, int numColumns)
{
String[] vals = s.Split("(\\s)+");
// there is the possibility the first element could be empty
int start = String.IsNullOrEmpty(vals[0]) ? 1 : 0;
// covert it from string to doubles
int numRows = (vals.Count() - start) / numColumns;
DMatrixRMaj ret = new DMatrixRMaj(numRows, numColumns);
int index = start;
for (int i = 0; i < numRows; i++)
{
for (int j = 0; j < numColumns; j++)
{
ret.set(i, j, Double.Parse(vals[index++]));
}
}
return(ret);
}