Search found 294 matches

by Aaron Fox
Tue Jan 21, 2025 3:24 pm
Forum: OpenSim
Topic: Python Bindings in Custom OpenSim Build
Replies: 5
Views: 1108

Re: Python Bindings in Custom OpenSim Build

Thanks Nick. Follow-up question, if I successfully get these bindings to work I would then need to build this custom version of OpenSim (e.g. via the continuous-integration workflow on GitHub actions) and that would generate the set-up files for configuring a Python environment to use this version o...
by Aaron Fox
Thu Dec 12, 2024 3:37 pm
Forum: OpenSim Moco
Topic: ligament related problem - seeking advice
Replies: 2
Views: 359

Re: ligament related problem - seeking advice

Hi Hojin, I think Pasha's provided a good response to your question, so all I'm here to say is that this sounds like a nice model implementation and think it could have some application to investigating ligament loading in side-stepping from an ACL injury perspective. I've attempted something simila...
by Aaron Fox
Wed Dec 11, 2024 6:15 pm
Forum: OpenSim
Topic: Python Bindings in Custom OpenSim Build
Replies: 5
Views: 1108

Python Bindings in Custom OpenSim Build

Hi OpenSim Team, I have created some new classes in a custom build of OpenSim 4.5 which seem to be behaving nicely and working in C++ on my local build. I would like to try and include these new classes in the Python bindings as I'm keen to run some more detailed pipelines and analyses with these cl...
by Aaron Fox
Thu Dec 05, 2024 3:55 pm
Forum: OpenSim Moco
Topic: FunctionBasedPath Custom Path Points
Replies: 8
Views: 4268

Re: FunctionBasedPath Custom Path Points

Hi Christian, I've had this same GUI visualizer bug (maybe it's a feature and not a bug?) you mention with respect to muscles with function based paths not showing as well - so that behaviour seems consistent. I've checked some models I've used that have converted Millard muscles to the DeGrooteFreg...
by Aaron Fox
Wed Dec 04, 2024 3:42 pm
Forum: OpenSim
Topic: Express Markers and Forces in the Same Frame
Replies: 1
Views: 409

Re: Express Markers and Forces in the Same Frame

Hi Josee, If you are scripting via the API (in C++, Matlab or Python) there are commands to express stations/points either in another frame or in the ground frame . Depending on what the original frame the data are expressed in will dictate which of these is more efficient (i.e. if they are in two d...
by Aaron Fox
Tue Nov 12, 2024 5:21 pm
Forum: OpenSim
Topic: Handling Data from 5 Force Plates
Replies: 8
Views: 5127

Re: Handling Data from 5 Force Plates

Hi Mahshida,

I'm pretty sure that will get fixed up straight away if you change the ordering of the columns in your .mot file. Just look at the column order in one that displays appropriately from the example resource folders and then replicate that - it should be a quick fix.

Aaron
by Aaron Fox
Wed Nov 06, 2024 5:24 pm
Forum: OpenSim
Topic: Automatic Scaling Tool - Isssue
Replies: 4
Views: 1233

Re: Automatic Scaling Tool - Isssue

Hi Kevin, Not sure if the automatic scaling tool will allow you to do this as I'm unfamiliar, but in traditional scaling you can also add weights to joint coordinates to be a certain value (e.g. 0 degrees if you are confident they are in a neutral position). These coordinate scales also have weights...
by Aaron Fox
Wed Nov 06, 2024 5:21 pm
Forum: OpenSim
Topic: Handling Data from 5 Force Plates
Replies: 8
Views: 5127

Re: Handling Data from 5 Force Plates

Hi Mahshida, I recently learnt that the order of the GRF components in the .mot file (i.e. the force, point and torque data) needs to be a particular way (I think it needs to be 3 x force, 3 x point, 3 x torque) for it to display correctly in the GUI visualiser. I had them in a different order and I...
by Aaron Fox
Thu Aug 29, 2024 8:39 pm
Forum: OpenCap
Topic: OpenCap Calibration Origin
Replies: 3
Views: 681

Re: OpenCap Calibration Origin

Hi Matt, Unfortunately no, I don't think we were that precise with how we placed each time - particularly as we were experimenting with camera positions and moving things a little around in the early stages. This is useful info for next time though. As an FYI the calibration of sorts between the sta...
by Aaron Fox
Wed Aug 28, 2024 4:46 pm
Forum: OpenCap
Topic: Processing and Camera Issues
Replies: 0
Views: 356

Processing and Camera Issues

Hi OpenCap Team, I'm wondering if there is a way to check some potential processing and camera issues from recent sessions we've run. Across a session we have some trials that work and others that haven't, and when trying to reprocess these locally the Python console either outputs that the trial fa...