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pyomeca / ezc3d

Easy to use C3D reader/writer for C++, Python and Matlab
https://pyomeca.github.io/Documentation/ezc3d/index.html
MIT License
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Bug: Reading analogs from .c3d using Kineticstoolkit via ezc3d #307

Closed zybermonk closed 8 months ago

zybermonk commented 9 months ago

I have some .c3d files recorded from a Mocap system. I use kineticstoolkit library (which in-turn uses ezc3d to read files), but it does not read the analogs from these c3d files by default. However, When I open the files in a biomechanics viewer (mokka) analogs are present. And when I export the exact file from mokka, now ktk (kineticstoolkit) reads the analogs.

Please refer to this issue on kineticstoolkit for more information: https://github.com/kineticstoolkit/kineticstoolkit/issues/219

Talking to KTK, the issue seems to be on the ezc3d. Any assistance would be appreciated. Additionally, if you need the files before and after exporting from mokka, I can share them with you via email.

Thanks in advance. Regards.

pariterre commented 9 months ago

Hi @zybermonk

Thanks for reporting the issue, could you provide me with a faulting C3D so I can have a look a the issue

Regards :)

zybermonk commented 9 months ago

Hi @pariterre, Thank you for your quick response. I have sent them to your mail that I got from your GitHub.

Looking forward to your response. Best, Mohan

pariterre commented 9 months ago

Hi @zybermonk still waiting for the c3d file!

zybermonk commented 9 months ago

Hi @pariterre, I sent it to pariterre@hotmail.com, right after your request. Please check your spam just in case it ended up there.

Alternatively, if you want it to an other address, I shall share them again. Let me know. Thanks

pariterre commented 9 months ago

It does not seem to be in the spam... could you try same address but gmail.com?

zybermonk commented 9 months ago

Done. Let me know if you received them in your gmail.

pariterre commented 9 months ago

Yep, got it :)

pariterre commented 8 months ago

Dear @zybermonk Sorry for the late answer, I could have a look at the data. It seems Shadow was quite loose in their implementation of the C3D format... I made a fix that overcome this. If you are able to compile ezc3d by yourself, could you have a try? If not, I can make a release which will allow you to download the latest version, but I am not 100% sure of the fix, that's why I'd like you input on: does this fix gives expected results!

pariterre commented 8 months ago

See #309

zybermonk commented 8 months ago

Dear @zybermonk Sorry for the late answer, I could have a look at the data. It seems Shadow was quite loose in their implementation of the C3D format... I made a fix that overcome this. If you are able to compile ezc3d by yourself, could you have a try? If not, I can make a release which will allow you to download the latest version, but I am not 100% sure of the fix, that's why I'd like you input on: does this fix gives expected results!

Thank you, @pariterre, The fix seems to work and is getting us the required analogs. Really appreciate the workaround to overcome this.

Closing the issue as done.