When I add an ellipsoid joint to a model, the corresponding ellipsoid is displayed (solid blue) in the gui. Is there a way to hide/change the display properties of this ellipsoid?

I haven't looked in detail at the implementation of Prescribed Coordinates, so I am not sure... but as far as I know you can only prescribe position. I think you might be able to solve your issue by resetting the speeds of your prescribed coordinates in the state at the beginning of each cycle. Righ...

https://www.paraview.org/Wiki/Beginning_Filters

You can use the clip filter in Para view to cut geometries ^.

A couple other mesh editing softwares listed here:
https://github.com/clnsmith/opensim-jam ... ting-tools

I'm not sure about a nice solution for the first question through the API. For the second question, the scale tool is essentially performing inverse kinematics for your input .trc marker data. So an optimization is being solved to calculate the joint angles that pose the model to minimize the errors...

Hi, I am removing a CustomJoint from my model and replacing it with a new PinJoint, using model.updJointSet().remove(joint); When I remove the CustomJoint, the coordinates are accordingly removed, but this causes problems if other components depend on the removed coordinates. In this example, I have...

Easiest way I can think of is to use the gui to add markers to the model and adjust their placement so that are located over the boney landmarks of interest. If you attach them all to the ground body, then you can save the markerset to a file, and it will contain the x,y,z positions of each of the b...

Sounds like the state might only realized to the position stage.

Try running this line before accessing the multipliers.

model.realizeVelocity(state)

I think the forum community can be helpful for you if you clarify exactly what errors you are getting and/or upload the code and input files you are having issues with.

This might be helpful for you:
https://github.com/opensim-org/opensim-core/issues/2389

I have gotten a similar error to the first example you show. This likely means that the tool cannot find your generic model. check scaleTool.getPathToSubject(). I think this gets set to the directory where your scale tool setup file is located. This path gets appended to the generic model file in th...

"C:\OpenSim 4.0\resources\Code\GUI\runScaling.py"

Check out that file in the Resources folder that comes with OpenSim 4.0