CSVDataloader problem

[yujiangsenior]

Hi there, I am trying to follow an example of DMD, as follows. https://github.com/AndreWeiner/ofw2022_dmd_training/blob/main/dmd_flowtorch.ipynb But the CSVDataloader could never be able to load any dataset successfully as the helping document of CSVDataloader suggests, with the error as follows. Thanks for helping.

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ValueError Traceback (most recent call last) Cell In[36], line 2 1 path = r'datasets\csv_naca0012_alpha4_surface' ----> 2 loader = CSVDataloader.from_foam_surface(path, "total(p)_coeff_airfoil.raw") 3 times = loader.write_times

File E:\softwares\Anaconda3\envs\pyflowt\lib\site-packages\flowtorch\data\csv_dataloader.py:200, in CSVDataloader.from_foam_surface(cls, path, file_name, header, dtype) 180 """Create CSVDataloader instance to load OpenFOAM surface sample data. 181 182 The class method simplifies to load data generated by OpenFOAM's (...) 197 198 """ 199 folders = glob(f"{path}/*") --> 200 times = sorted( 201 [folder.split("/")[-1] for folder in folders], key=float 202 ) 203 filepath = join(path, times[0], file_name) 204 with open(filepath, "r") as surface:

ValueError: could not convert string to float: 'datasets\csv_naca0012_alpha4_surface\0.001'

[AndreWeiner]

Hi @yujiangsenior, I did not design the code for execution on Windows. Therefore, the dataloaders are not working for you. I think it shouldn't be too much work to adapt the paths to Windows, but I have no means to test the code. I'll have a look later today. Best, Andre

[yujiangsenior]

Thanks Andre. I also did not make it run on Ubuntu, maybe I will reinstall the packages again both on Ubuntu and Windows. I don't know how to make adjustments on Windows to make it run still, but I'll give it a try. Thanks again. Yu

[AndreWeiner]

The OS dependency of the CSVDataloader should be fixed by this commit. The easiest way to get the fix:

pip3 uninstall flowtorch
pip3 install git+https://github.com/FlowModelingControl/flowtorch.git@aweiner

Best regards, Andre