/**
* returns a subset of this column with entried from rows indicated by <code>indices</code>.
*
* @param indices row numbers to include in the returned subset.
* @return a subset of this column, including rows indicated by <code>indices</code>.
*/
public Column getSubset(int[] indices) {
SparseObjectColumn retVal = new SparseObjectColumn(indices.length);
for (int i = 0; i < indices.length; i++) {
if (elements.containsKey(indices[i])) {
// XIAOLEI
// retVal.setObject(getObject(indices[i]), indices[i]);
retVal.setObject(getObject(indices[i]), i);
}
}
super.getSubset(retVal, indices);
return retVal;
}
