// Sets the mapped_features_ from the features_ using the provided
// feature_space to the indexed versions of the features.
void TrainingSample::IndexFeatures(const IntFeatureSpace& feature_space) {
GenericVector<int> indexed_features;
feature_space.IndexAndSortFeatures(features_, num_features_,
&mapped_features_);
features_are_indexed_ = true;
features_are_mapped_ = false;
}
// Display the samples with the given indexed feature that also match
// the given shape.
void TrainingSampleSet::DisplaySamplesWithFeature(int f_index,
const Shape &shape,
const IntFeatureSpace &space,
ScrollView::Color color,
ScrollView *window) const {
for (int s = 0; s < num_raw_samples(); ++s) {
const TrainingSample *sample = GetSample(s);
if (shape.ContainsUnichar(sample->class_id())) {
GenericVector <int> indexed_features;
space.IndexAndSortFeatures(sample->features(), sample->num_features(),
&indexed_features);
for (int f = 0; f < indexed_features.size(); ++f) {
if (indexed_features[f] == f_index) {
sample->DisplayFeatures(color, window);
}
}
}
}
}