ValueError: need at least one array to concatenate

[makaay2077]

Hi.First python utils/data_prepare_semantic3d.py and then I am running main_Semantic.py but I am getting error as below. Could you please help.?

main_Semantic3D.py:89: FutureWarning: elementwise comparison failed; returning scalar instead, but in the future will perform elementwise comparison elif file_path in self.train_files:

Preparing reprojection indices for validation and test finished Initiating input pipelines Traceback (most recent call last): File "main_Semantic3D.py", line 333, in dataset.init_input_pipeline() File "main_Semantic3D.py", line 292, in init_input_pipeline gen_function, gen_types, gen_shapes = self.get_batch_gen('training') File "main_Semantic3D.py", line 161, in get_batch_gen _, num_class_total = np.unique(np.hstack(self.input_labels[split]), return_counts=True) File "/home/ubuntu/anaconda3/envs/cagdas/lib/python3.6/site-packages/numpy/core/shape_base.py", line 340, in hstack return _nx.concatenate(arrs, 1) ValueError: need at least one array to concatenate

[ClosedOn]

I also encountered this problem. Have you solved it?

[QingyongHu]

Thanks for your interest in our work! @makaay2077 @ClosedOn

It seems the data is not loaded correctly, please check if the data preparation is correct, and the path to the dataset is correct

I hope this could answer your question.