KeyError while using compare_to_groundtruth

Hi,

I am was trying to generate results on MOT16 challenge results and used mm.utils.compare_to_groundtruth to get the accuracy but resulted in error.

df_gt = mm.io.loadtxt('MOT16/preds/MOT16-01/gt/det.txt')
df_test = mm.io.loadtxt('MOT16/preds/MOT16-01/gt/pretrained_pred.txt')
check = mm.utils.compare_to_groundtruth(df_gt, df_test, 'iou', distth=0.5)

ERROR

KeyError                                  Traceback (most recent call last)
<ipython-input-102-df402fdf5fbc> in <module>
      6 
      7 # df_test = mm.io.loadtxt(result)
----> 8 check = mm.utils.compare_to_groundtruth(df_gt, df_test, 'iou', distth=0.5)
      9 

~/opt/anaconda3/lib/python3.7/site-packages/motmetrics/utils.py in compare_to_groundtruth(gt, dt, dist, distfields, distth)
     80         if len(oids) > 0 and len(hids) > 0:
     81             dists = compute_dist(fgt.values, fdt.values)
---> 82         acc.update(oids, hids, dists, frameid=fid)
     83 
     84     return acc

~/opt/anaconda3/lib/python3.7/site-packages/motmetrics/mot.py in update(self, oids, hids, dists, frameid, vf)
    260                 is_switch = (o in self.m and
    261                              self.m[o] != h and
--> 262                              abs(frameid - self.last_occurrence[o]) <= self.max_switch_time)
    263                 cat1 = 'SWITCH' if is_switch else 'MATCH'
    264                 if cat1 == 'SWITCH':

KeyError: -1

pretrained_pred.txt det.txt finetuned_pred.txt

I have same problem. did you solve?

@yunseung-dable I removed a couple of metrics and it worked fine. Was not able to corner out the issue

same problem

Same problem, when the customer ID is some specific number, it will reprot error