I have not. The sensitivity here will be problem-specific, so I think it's best for folks to investigate it on a problem-specific basis.

Ross

Thanks both! That is a nice new feature.

Hi all, In most simulations that most of us do in Moco, the variables that are optimized (i.e. the "design variables) all vary over a range of approximately [-1, +1], for example muscle excitations, muscle activations, CC lengths, normalized SEC forces, joint angles in radians, etc. In a current sim...

Hi Soyoung, I would not equate RRA with filtering. There will be non-zero residuals in an inverse dynamics analysis even in a hypothetical situation where the skeletal motion and external forces are measured with perfect accuracy. I recommend the following paper, where the first few paragraphs descr...

For example, this morning I started a simulation of walking with a prosthetic limb that adds a degree of freedom (pistoning) between the residual limb and prosthesis. Previously I've been modeling that interface as rigid. As the initial guess for this simulation, I used a previous simulation with th...

I second Nick's recommendation to start simple and add complexity from there. When I first started using Moco, I started with the "example2Dwalk" example, which runs fast and converges on a good result. Then I gradually made one change at a time to that model and setup, for example first I changed i...

I've never seen this one before but from the reference to "resampling" I'm guessing it's something related to the initial guess. My guess would be it's re-sampling the initial guess and somehow getting a final time in the guess of 1.799999999999... or something, when the problem is specifying a fina...

Sounds like I should see what the return policy is on the 12-core CPU / 30-core GPU I just bought.

Hi all, I've been using the Matlab script "c3dexport.m" to convert C3D files into TRC and MOT files for AddBiomechanics. Is there a way to replace the data in the osimC3D variable (it's named "c3d" in the code below) with modified data, before writing the data to the TRC and MOT files? Filtering/smo...

Hi Nick, I would use whatever speed the subject(s) in the tracking target data walked at, but I also doubt that an inconsistency there is the source of the hip JCF issue. Various questions below: - What does the overall tracking result look like? Is it tracking the target data fairly well? - What ar...