About `time_seq` and `time_compressing`: the point at the same timestamp skipped?

[LarryDong]

Hi, thanks for the codes.

I notice that after time_compressing in:

time_seq = = time_compressing<int>(feats_down_body);

the size of time_seq is a litter smaller than feats_down_body.
And the typical time_seq values are many 1 and some 2.

I checked the time_compressing function and guess it find the "next different" timestamp's point,
while in main loop, idx skip the point with the same timestamp by

idx += time_seq[k];

Is that right? And what is the purpose?
Thanks.