replace nans by empty string in trc for OpenSim compatibility

Pose2Sim/filtering.py

@@ -491,6 +491,7 @@ def filter_all(config):
             [trc_o.write(line) for line in header]
             Q_filt.insert(0, 'Frame#', frames_col)
             Q_filt.insert(1, 'Time', time_col)
+            # Q_filt = Q_filt.fillna(' ')
             Q_filt.to_csv(trc_o, sep='\t', index=False, header=None, lineterminator='\n')
 
         # Recap

Pose2Sim/triangulation.py

@@ -241,6 +241,7 @@ def make_trc(config, Q, keypoints_names, f_range, id_person=-1):
     #Add Frame# and Time columns
     Q.index = np.array(range(0, f_range[1]-f_range[0])) + 1
     Q.insert(0, 't', Q.index / frame_rate)
+    # Q = Q.fillna(' ')
 
     #Write file
     if not os.path.exists(pose3d_dir): os.mkdir(pose3d_dir)