duplicate timestamps in tracks

[aterpstra]

Some tracks have duplicate timestamps in their tracks. Some examples below for output from ot.time. Not sure where this comes from, happens directly after loading.

track_idx  row_idx
0          0.0       2017-11-02 18:00:00
           1.0       2017-11-02 21:00:00
           2.0       2017-11-03 00:00:00
           3.0       2017-11-03 03:00:00
           4.0       2017-11-03 06:00:00
           5.0       2017-11-03 06:00:00
           6.0       2017-11-03 09:00:00
Name: time, dtype: datetime64[ns]

track_idx  row_idx
13         0.0       2017-11-10 03:00:00
           1.0       2017-11-10 06:00:00
           2.0       2017-11-10 09:00:00
           3.0       2017-11-10 09:00:00
           4.0       2017-11-10 09:00:00
           5.0       2017-11-10 09:00:00
           6.0       2017-11-10 09:00:00
           7.0       2017-11-10 09:00:00
           8.0       2017-11-10 09:00:00
           9.0       2017-11-10 09:00:00
           10.0      2017-11-10 09:00:00
           11.0      2017-11-10 09:00:00
           12.0      2017-11-10 09:00:00
           13.0      2017-11-10 09:00:00
           14.0      2017-11-10 12:00:00
           15.0      2017-11-10 15:00:00
Name: time, dtype: datetime64[ns]

[dennissergeev]

Can you find the vortrack* text file of these tracks? Does it have duplicated time stamps there as well?

[aterpstra]

Not sure which vortrack* file exactly matches the example track. Need to spend some more time to figure that out. But here's an example of a vortrack* with duplicates:

-16.75000 63.75000 0.25163 201711101500 2064.31445 0
-16.75000 63.75000 0.27849 201711101800 2406.85303 0
-16.75000 63.75000 0.27849 201711101800 2406.85303 0
-16.75000 63.75000 0.28011 201711102100 3097.98511 0
-16.75000 63.75000 0.28011 201711102100 3097.98511 0
-16.75000 63.75000 0.33939 201711110000 5522.97705 0
-16.75000 63.75000 0.33939 201711110000 5522.97705 0
-17.50000 63.75000 0.39444 201711110300 7256.82422 0
-17.50000 63.75000 0.39444 201711110300 7256.82422 0
-18.00000 63.75000 0.42581 201711110600 9044.97363 0
-18.00000 63.75000 0.42581 201711110600 9044.97363 0
-17.00000 63.25000 0.24181 201711110900 3894.65601 0
-17.00000 63.25000 0.24181 201711110900 3894.65601 0

I found several more vortrack* with duplicates, all of them only duplicate every timestep twice...
Will search a bit more and let you know if I find the exact track.

[dennissergeev]

OK, thanks for reporting this.
It seems that it's a bug in PMCTRACK, not octant. Though I don't know what can be causing this.