Search found 8 matches

by Jasvir Bahl
Wed Oct 30, 2019 8:22 pm
Forum: OpenSim
Topic: Any progress towards using Kistler plates with OpenSim?
Replies: 3
Views: 349

Re: Any progress towards using Kistler plates with OpenSim?

Hi Madeleine, why not use MOtoNMS to convert your C3D files to Osim formats? It is compatible with Kistler FPs and the code can be tweaked to make the process more automated.

MOtoNMS is flexible but can be tedious if you have lots of gait data. How many trials do you/will you have?

Cheers
Jas
by Jasvir Bahl
Thu Jan 24, 2019 10:21 am
Forum: OpenSim
Topic: Batch AnalyzeTool: java:154 error
Replies: 1
Views: 123

Re: Batch AnalyzeTool: java:154 error

Managed to fix this issue using the following approach suggested by James Dunne on a different post discussing issues appending actuators and external loads to a template SO_setup file. " This seems similar to previous issues I have had with changing the external loads file when using a pre-existing...
by Jasvir Bahl
Wed Jan 23, 2019 8:19 am
Forum: OpenSim
Topic: Batch AnalyzeTool: java:154 error
Replies: 1
Views: 123

Batch AnalyzeTool: java:154 error

Hi, I am using the AnalyzeTool in matlab to loop over a series of motion trials. It successfully processes the first 2 trials and then I get the below error on the third file: "" Error using setupAndRunStaticOpBatch2 (line 182) Java exception occurred: java.io.IOException: ExternalForce: Data source...
by Jasvir Bahl
Fri Aug 17, 2018 1:39 am
Forum: OpenSim
Topic: Hip Center Manual Scaling
Replies: 0
Views: 210

Hip Center Manual Scaling

Hi, I am trying to scale the pelvis of the Gait2392 model and I have a 'known' HJC location in pelvis frame from CT I have computed externally. Can I use the difference in hip joint center locations between the 2392 and my model to apply manual scale factors for the pelvis of 2392? When I try this t...
by Jasvir Bahl
Mon Mar 06, 2017 5:40 pm
Forum: OpenSim
Topic: Low Joint Reaction Force
Replies: 0
Views: 131

Low Joint Reaction Force

I ran the analysis function to estimate joint contact loads of the hip on the acetabulum in the femur during pathological gait and got a joint reaction of 0.4BW. The patient's gait appears to have a clear stance phase so clearly less than 1BW is not accurate. What are the steps to take to generate a...
by Jasvir Bahl
Thu Nov 17, 2016 10:13 pm
Forum: OpenSim
Topic: Modifying geometry in OpenSim
Replies: 5
Views: 630

Re: Modifying geometry in OpenSim

Okay I see what you mean. If I import an STL with different geometry to the 2392 file, this would obviously effect the new muscle attachments points won't it?
by Jasvir Bahl
Wed Nov 16, 2016 2:17 pm
Forum: OpenSim
Topic: Modifying geometry in OpenSim
Replies: 5
Views: 630

Re: Modifying geometry in OpenSim

Thanks for your response Daniel. So I simply modify the geometry in notepad ++ using the x,y,z in the parent (i.e. pelvis)? Is there also a way to change this in the OpenSim GUI?
by Jasvir Bahl
Mon Nov 14, 2016 8:07 pm
Forum: OpenSim
Topic: Modifying geometry in OpenSim
Replies: 5
Views: 630

Modifying geometry in OpenSim

How do I modify the geometry of the femur in OpenSim, i.e. change in hip joint centre location, femoral anteversion and femoral neck length. I can determine the geometry in an external software from a segmented bone but am not sure how to then modify/scale the model in OpenSim to match. Any help wou...