Examples of org.apache.mahout.math.Vector.iterateNonZero()

org.apache.mahout.math.Vector.iterateNonZero()
Iterates over all non-zero elements.
NOTE: Implementations may choose to reuse the Element returned for performance reasons, so if you need a copy of it, you should call {@link #getElement} for the given index @return An {@link Iterator} over all non-zero elements

            VectorWritable vw = new VectorWritable();
            pointsReader = new SequenceFileDirectoryReader(docTopicsPath);
            while (pointsReader.next(k, vw)) {
                String docId = k.toString();
                Vector normGamma = vw.get();
                Iterator<Element> iter = normGamma.iterateNonZero();
                double maxTopicScore = 0.0;
                int idx = 0;
                int topic = 0;
                while(iter.hasNext()) {
                    Element e = iter.next();

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            Vector rowInfo = value.get();
            if (rowInfo instanceof NamedVector) {
                NamedVector nrowInfo = (NamedVector) rowInfo;
                rowID = Integer.parseInt(nrowInfo.getName());
            }
            for (Iterator<Vector.Element> itr = rowInfo.iterateNonZero(); itr.hasNext();) {
                Vector.Element elemInfo = itr.next();
                Tuple currElement = tupleFactory.newTuple(2);
                currElement.set(0, elemInfo.index());
                currElement.set(1, elemInfo.get());
                rowInfoBag.add(currElement);

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            int clusterID = key.get();
            WeightedVectorWritable value = (WeightedVectorWritable) reader.getCurrentValue();
            Vector rowInfo = value.getVector();
            NamedVector nrowInfo = (NamedVector) rowInfo;
            int vectorID = Integer.parseInt(nrowInfo.getName());
            for (Iterator<Vector.Element> itr = rowInfo.iterateNonZero(); itr.hasNext();) {
                Vector.Element elemInfo = itr.next();
                Tuple currElement = tupleFactory.newTuple(2);
                currElement.set(0, elemInfo.index());
                currElement.set(1, elemInfo.get());
                rowInfoBag.add(currElement);

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