private static NumericMatrix getMatrix(Collection<PlainPerson> persons, LegPredicate pred) {
NumericMatrix m = new NumericMatrix();
for (Person person : persons) {
for (Episode episode : person.getEpisodes()) {
for (int i = 0; i < episode.getLegs().size(); i++) {
Segment leg = episode.getLegs().get(i);
if (pred.test(leg)) {
Segment prev = episode.getActivities().get(i);
Segment next = episode.getActivities().get(i + 1);
String origin = prev.getAttribute(SetZones.ZONE_KEY);
String dest = next.getAttribute(SetZones.ZONE_KEY);
if (origin != null && dest != null) {
m.add(origin, dest, 1);
String touched = leg.getAttribute(DBG_TOUCHED);
int cnt = 0;
if (touched != null) cnt = Integer.parseInt(touched);
leg.setAttribute(DBG_TOUCHED, String.valueOf(cnt + 1));
}
}
}
}
}
return m;
}