Hi Ayman,
Thanks so much! A colleagues suggested equilibrate muscles, but and it would have been the next thing we tried, but the defaults would have been another story.
We'll implement those changes, check that we get the same outputs, and then post again with our results.
Thanks very much,
David
Search found 81 matches
- Sat Jul 06, 2013 3:17 pm
- Forum: OpenSim
- Topic: muscle analysis vs direct API computation
- Replies: 3
- Views: 646
- Fri Jul 05, 2013 1:14 am
- Forum: OpenSim
- Topic: muscle analysis vs direct API computation
- Replies: 3
- Views: 646
muscle analysis vs direct API computation
Hi All, Let me describe the problem. I have a large data set and part of the processing pipeline is to compute MTU lengths and moment arms for various modes of gait (walking, running, cutting, etc...). I have successfully used the API via Matlab scripts to run muscle analysis, but seeing as I'm only...
- Tue Jun 11, 2013 6:52 pm
- Forum: OpenSim
- Topic: Can the Vicon PluginGait marker set be used in OpenSim?
- Replies: 3
- Views: 1680
Re: Can the Vicon PluginGait marker set be used in OpenSim?
Hi,
I believe you will need at least 3 markers per segment/body to do ANY 3D motion analysis. This is not a unique demand of OpenSim.
Plug-in gait has 3 markers on each segment. Otherwise it cannot compute direct kinematics or ID.
David
I believe you will need at least 3 markers per segment/body to do ANY 3D motion analysis. This is not a unique demand of OpenSim.
Plug-in gait has 3 markers on each segment. Otherwise it cannot compute direct kinematics or ID.
David
Re: ID output
Hi Karen, No idea about jython. I use the matlab wrappers to access the API. Forgive the basic question: is there a setOutputGenForceFileName()? Get and set are present using the Matlab scripting, not sure how jython script would address the same issue. How do you set other values or files in your s...
Re: ID output
Karen,
If you look in the xml file for the ID setup you'll find
1) results directory. You can set the path so your output goes to a nice place.
2) output_gen_force_file. This is the name of the output file. You can change it, manually or through some code.
Cheers,
David
If you look in the xml file for the ID setup you'll find
1) results directory. You can set the path so your output goes to a nice place.
2) output_gen_force_file. This is the name of the output file. You can change it, manually or through some code.
Cheers,
David
- Tue Apr 16, 2013 7:19 pm
- Forum: OpenSim
- Topic: Freezing while Adjusting Marker Data
- Replies: 4
- Views: 1227
Re: Freezing while Adjusting Marker Data
Hi Ayman,
I'll post a bug report and include the model, setup files, and data.
David
I'll post a bug report and include the model, setup files, and data.
David
- Thu Apr 11, 2013 7:13 pm
- Forum: OpenSim
- Topic: Freezing while Adjusting Marker Data
- Replies: 4
- Views: 1227
Re: Freezing while Adjusting Marker Data
Hey, I've had that problem when I turned off the model scale and tried to only use the reposition/adjust markers process. What I usually do is leave the scale model process active, but set the scale factors to unassigned or manual scales of 1. This keeps the model from being scaled (if that is what ...
- Tue Apr 09, 2013 7:20 pm
- Forum: OpenSim
- Topic: Basic Questions about the Functionality
- Replies: 19
- Views: 2551
Re: Basic Questions about the Functionality
Hi Fabian, I can comment on what I know OpenSim can do through my own experience, but I think generally you will find most of your goals can be satisfied by OpenSim in theory. 1) Yes you can solve for muscle forces in OpenSim through static optimization and/or CMC. Or potentially by creating your ow...
- Sun Mar 17, 2013 10:03 pm
- Forum: OpenSim
- Topic: Performing Inverse Dynamics via Matlab API
- Replies: 30
- Views: 10211
Re: Performing Inverse Dynamics via Matlab API
Hi Ayman, Your suggestions worked very well. For ID: I looked at the source code for DynamicsTool to understand the construction of external loads by ExternalLoads constructor. Once made, I set the ID tool's external loads to the new file created. Works! On an unrelated note, have you guys had any b...
- Fri Mar 15, 2013 4:12 pm
- Forum: OpenSim
- Topic: Performing Inverse Dynamics via Matlab API
- Replies: 30
- Views: 10211
Re: Performing Inverse Dynamics via Matlab API
Hi Ayman,
Thanks a lot!
I'll give it a go and report back on the forum how it went.
David
Thanks a lot!
I'll give it a go and report back on the forum how it went.
David