protected GribCollectionProto.Coord writeCoordProto(TimeCoord tc, int index) throws IOException {
GribCollectionProto.Coord.Builder b = GribCollectionProto.Coord.newBuilder();
b.setCode(index);
b.setUnit(tc.getUnits());
float scale =
(float) tc.getTimeUnitScale(); // deal with, eg, "6 hours" by multiplying values by 6
if (tc.isInterval()) {
for (TimeCoord.Tinv tinv : tc.getIntervals()) {
b.addValues(tinv.getBounds1() * scale);
b.addBound(tinv.getBounds2() * scale);
}
} else {
for (int value : tc.getCoords()) b.addValues(value * scale);
}
return b.build();
}