issue runing segmentation_to_centerlines.py

[Jamie790]

Hi,

When i try to run segmentation_to_centerlines.py and try to extract centerline from .nii, i encounting following errer, any suggestions.

(meshing) jay@WINDOWS-5N745I9:~/vascularmd/Others$ python segmentation_to_centerlines.py
/home/jamie_lyu/miniconda3/envs/meshing/lib/python3.7/site-packages/skimage/util/dtype.py:531: UserWarning: Downcasting int16 to uint8 without scaling because max value 1 fits in uint8
return _convert(image, np.uint8, force_copy)

segmentation_to_centerlines.py:968: RuntimeWarning: invalid value encountered in true_divide
v.append((pt[i] - bif_coord) / norm(pt[i] - bif_coord))
segmentation_to_centerlines.py:979: RuntimeWarning: invalid value encountered in true_divide
v.append((pt[i] - bif_coord) / norm(pt[i] - bif_coord))
segmentation_to_centerlines.py:732: RuntimeWarning: invalid value encountered in true_divide
v.append(vect / norm(vect))
Traceback (most recent call last):
File "segmentation_to_centerlines.py", line 1611, in
write_swc(path_to_outfolder, path_to_img, algo = "sknw", path_data = [path_to_img])
File "segmentation_to_centerlines.py", line 1581, in write_swc
G_list = undirected_graph_to_oriented_tree(G, min_size = 200, remove_multi = True, create_cliques = True, coef_weight = 0.2, orientation = True, dim_inlet = dim_inlet)
File "segmentation_to_centerlines.py", line 1185, in undirected_graph_to_oriented_tree
T = add_weight(T, coef=coef_weight)
File "segmentation_to_centerlines.py", line 1064, in add_weight
w = (1-coef) * ((T.edges[e]["length"] - min_length)/ (max_length - min_length)) + coef * (1-((T.edges[e]["angle"] - min_angle)/ (max_angle - min_angle)))
ZeroDivisionError: float division by zero

Regards,
Jay