Joint angles discrepancies between web app and csv files

New project for OpenCap, which is a new software package to estimate 3D human movement dynamics from smartphone videos. OpenCap strongly relies on OpenSim.
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Camille Frayssinhes
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Joined: Thu Nov 16, 2023 9:42 am

Joint angles discrepancies between web app and csv files

Post by Camille Frayssinhes » Tue Nov 28, 2023 8:18 am

Hi,

I am wondering what I am missing, but when I plot the joint angle (here hip flexion l) using the web app, the joint angles seem correct (around 40 degrees peak flexion), but when I use the code on google collab to download the csv files, I don't understand the values on the y axis (200-600 degrees peak flexion).
Do you have any idea of what my problem is?

Thank you for your help,

Best,

Camille
Attachments
Screenshot 2023-11-28 at 10.17.08.png
csv file
Screenshot 2023-11-28 at 10.17.08.png (307.28 KiB) Viewed 463 times
Screenshot 2023-11-28 at 10.16.53.png
web app
Screenshot 2023-11-28 at 10.16.53.png (281.56 KiB) Viewed 463 times

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Antoine Falisse
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Re: Joint angles discrepancies between web app and csv files

Post by Antoine Falisse » Tue Nov 28, 2023 10:55 am

Can you double check that you are plotting coordinate values and not speeds or accelerations on the colab side? After checking please share a little more code so that we can help out. Thanks.

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Camille Frayssinhes
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Joined: Thu Nov 16, 2023 9:42 am

Re: Joint angles discrepancies between web app and csv files

Post by Camille Frayssinhes » Tue Nov 28, 2023 11:08 am

Oh, I am so sorry, I was indeed extracting and plotting the speeds...
Problem solved!
Thank you so much.

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Antoine Falisse
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Re: Joint angles discrepancies between web app and csv files

Post by Antoine Falisse » Tue Nov 28, 2023 11:26 am

Great!

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