Hi Ayman, Thanks for the helpful responses. I've been able to apply arbitrary controls to my model by creating a PrescribedController() and defining a PiecewiseLinearFunction(). I think this will work for my current purposes. However, the ControlSetController() did not work for me in Matlab (I'm usi...

Hi Ayman, Thanks for the reply, that makes sense. I will try it and let you know how I make out. I do have a quick follow-up question: When the forward tool is run by the GUI and it reads a user specified controls file, which type of controller does it create to apply those controls to the model act...

Hi All, I am trying to write a Matlab script that runs a forward dynamics simulation using a specific controls file. I can run the simulation just fine, but it does not use the controls in the file that I specify. The controls all remain at their default values (= 0.0). When I do the same thing in t...

Hi Ayman, Thanks again for the help. Based on your suggestions, I was able to create a vector and set the values of the controls in version 3.1 beta. However, I am now unable to extract the center of mass velocity of the forearm/hand segment using the getVelocity method. This line of code: simbodyEn...

Hi Ayman, I appreciate your continued feedback and assistance. I'm running the 3.1 beta now and will let you know how I make out. I do have one question about Model.setControls. In some other "set" situations I have encountered, such as coordinate.setValue, a plain old double is passed in. However, ...

First, thanks so much to Ayman and Jiang for the helpful replies. And Ayman, I will try out the 3.1 Beta and let you know how I make out. I nearly have my exercise to recreate the C++ API optimization example working (i.e., to maximize the forward velocity of the arm). The only part I can't seem to ...

Hi Ayman, Thanks for the speedy and helpful reply, getitem(index) worked great in this case. Thanks also for the suggestion to use tab auto completion to get a list of available functions. I did find though, that some functions worked while some did not. As an example, hitting tab after: var = osimM...

In an effort to become more familiar with scripting in Matlab using the OpenSim API, I am trying to recreate the optimization problem from the C++ API Examples where the forward velocity of the forearm/hand segment center of mass is maximized. After running a simulation with a trial set of control v...