Search found 81 matches
- Tue Jan 27, 2015 12:54 am
- Forum: OpenSim
- Topic: Question about API-Visualizer
- Replies: 2
- Views: 352
Re: Question about API-Visualizer
Hi James, Thanks for the reply. I wanted a "nice" visualizer and Matlab isn't "nice" :roll: . Also I was just generally trying to work with the visualizer to expand my OpenSim range. I found a solution though, as you pointed out a model is abstract. I used model(), then created a bunch of objects wi...
- Wed Jan 07, 2015 7:54 pm
- Forum: OpenSim
- Topic: Question about API-Visualizer
- Replies: 2
- Views: 352
Question about API-Visualizer
Hi All, I want to use the API Visualizer through Matlab as a error checking tool for some spatial transforms I am performing (basically I want to see where some projected points end up to be confident I've done it correctly). From what I can tell, using the Visualizer through the API with Matlab wil...
- Tue Oct 14, 2014 7:11 pm
- Forum: OpenSim
- Topic: OpenSim 3.2 API for Mac
- Replies: 3
- Views: 588
Re: OpenSim 3.2 API for Mac
Hi Guys,
I'm working with a collaborator who uses a Mac (why I'm not sure ). Have you guys had success building from source, and then successfully calling the API via Mac Matlab?
Just curious how much effort is involved in getting this operational.
Best,
DJS
I'm working with a collaborator who uses a Mac (why I'm not sure ). Have you guys had success building from source, and then successfully calling the API via Mac Matlab?
Just curious how much effort is involved in getting this operational.
Best,
DJS
- Sun Mar 09, 2014 10:20 pm
- Forum: OpenSim
- Topic: Ground Reaction Force Plate
- Replies: 7
- Views: 1243
Re: Ground Reaction Force Plate
Hi Jim, What type of human motions do you expect to capture with your plate? Running, walking, posture work, stair assent, etc... I can only speak from my experience, but Kislter and AMTI plates are the standard. Sizing, models, etc... depends on how much money you have/want to spend, and what deman...
- Tue Feb 18, 2014 12:24 am
- Forum: OpenSim
- Topic: Scaling with Matlab
- Replies: 2
- Views: 605
Re: Scaling with Matlab
Hi Carlo, In the doxygen, https://simtk.org/api_docs/opensim/api_docs/classOpenSim_1_1ModelScaler.html#aa73bb6495f4c789cb2dc411b85ed4ff2 , you will find the inputs. modelScaler.processModel(states, model, pathtoSubject, mass) So you need to provide model states, the model, the path to where the subj...
- Mon Dec 23, 2013 7:07 pm
- Forum: OpenSim
- Topic: Define the axis of rotation angles
- Replies: 6
- Views: 1448
Re: Define the axis of rotation angles
Hi Derya, 1) Rotation 1, 2, 3 do not define the axes of rotation, they are a semantic for the rotation and indicate the rotation sequence. The tag within <transform axis> called <axis> lists axis for which the mobility is associated. If it is rotational then rotation about this axis, if translation ...
- Thu Dec 05, 2013 7:03 pm
- Forum: OpenSim
- Topic: Do NaN values affect Inverse Kinematics Solution?
- Replies: 1
- Views: 294
Re: Do NaN values affect Inverse Kinematics Solution?
Hi Shaun, I don't think this will "add" error, but a NAN for a marker will be dropped from the evaluation of IK's objective function for the frames were a NAN is present. The result will be a global solution for model general coordinates which does not include that marker(s). If that marker(s) was i...
- Mon Dec 02, 2013 9:28 pm
- Forum: OpenSim
- Topic: Performing Inverse Dynamics via Matlab API
- Replies: 30
- Views: 9805
Re: Performing Inverse Dynamics via Matlab API
Hi Gunter, That is fairly weird regarding the method problem. % Apply the generic xml to the constructor idTool = InverseDynamicsTool(genericSetupForID); % instantiate, set model, time, etc... % Create an external loads object extLoadsObject = ExternalLoads(model,activeExternalForceFile); % Set the ...
- Tue Nov 19, 2013 11:33 pm
- Forum: OpenSim
- Topic: PROBLEM STATIC OPTIMIZATION IN SIDE STEP CUTTING
- Replies: 4
- Views: 942
Re: PROBLEM STATIC OPTIMIZATION IN SIDE STEP CUTTING
Hi, That is the issue with increasing the muscle force by some factor (arbitrary or incremental). Have you examined whether allometric scaling of your model to fit your subject has affected the muscles normalized operating range? The approach we take is to optimize the fiber and tendon slack length ...
- Fri Nov 01, 2013 2:46 pm
- Forum: OpenSim
- Topic: Launch Point Kinematics Tool from Matlab
- Replies: 7
- Views: 1988
Re: Launch Point Kinematics Tool from Matlab
Carlo, Try James' point whereby you look in the xml file for the corresponding operation (i.e Point Kinematics operation within general Analyze Tool) and took at the tags and their names. If you then look up/search the name in the doxygen you will likely find the corresponding command (get/set, etc....