/**
* * Create a FastVector containing the set of values found in the given row...
*
* <p>NOTE: As it happens, this function determines the order of the attribute values, an order
* that will percolate throughout wekaMine and influence all subsequent displays.
*
* <p>Originally the valSet was a HashSet and the iteration order of that will depend on the hash
* code for the key, and may seem random. While we would not like to rely on the order of
* attributes, it seems desirable to make the attribute order somehow comprehensible, either sort
* order or insertion order. Insertion order will seem random also because it is determined by the
* arbitrary order of the instances. So it has been changed to a TreeSet which will be ordered by
* the natural ordering of it's elements.
*/
public FastVector getRowValues(Table t, int rowIdx) {
TreeSet<String> valSet = new TreeSet<String>();
for (int c = 0; c < t.cols(); c++) {
String val = (String) t.matrix.getQuick(rowIdx, c);
if (val == null) {
System.err.println("null value in row:" + rowIdx + " col:" + c);
for (int i = 0; i < t.cols(); i++) {
System.err.println("\t" + i + "\t" + t.matrix.getQuick(rowIdx, c));
}
}
// Don't want to include "missing value" as one of the nominal values...
if (!val.equals("?")) {
valSet.add(val);
}
}
FastVector attVals = new FastVector();
for (Object v : valSet) {
attVals.addElement(v);
}
return (attVals);
}
/** * Create a FastVector containing the set of values found in the given col... */
public FastVector getColValues(Table t, int colIdx) {
HashSet<String> valSet = new HashSet<String>();
for (int r = 0; r < t.rows(); r++) {
String val = (String) t.matrix.getQuick(r, colIdx);
if (val == null) {
System.err.println("\nDEBUG r=" + r + "\tc=" + colIdx + "\tval=" + val);
System.err.println("\nDEBUG r=" + t.rowNames[r] + "\tc=" + t.colNames[colIdx]);
}
// Don't want to include "missing value" as one of the nominal values...
if (val != null) {
if (!val.equals("?")) {
valSet.add(val);
}
}
}
FastVector attVals = new FastVector();
for (Object v : valSet) {
attVals.addElement(v);
}
return (attVals);
}