Thank you very much! That made it all clear.

Regards,
Kevin

Thanks Sherm. calcBodyAccelerationFromUDot() indeed seems the solution to my problem. Just to be sure: are all calculated accelerations expressed in the ground frame or in the body frame?

Could you explain why q_dot != u?

Kind regards,
Kevin

Hi Michael. I am using Visual Studio, but a right click didn't give me the code that you posted. This was probably because I just opened the MobilizedBody.cpp file, instead of the .sln file of the Simbody build. I am indeed interested to find out how the angular velocities are computed. Here's why: ...

Hi, I would like to know how the method getBodyAngularVelocity of the class MobilizedBody is implemented. In the source code I found the following: const Vec3& getBodyAngularVelocity(const State& state) const { // w_GB return getBodyVelocity(state)[0]; } Then I found : const SpatialVec& MobilizedBod...

myModel = Model('c:/.../gait2354.osim') shoulderJoint = CustomJoint.safeDownCast( myModel.getJoints().get('rightShoulder') ); transformShoulder = shoulderJoint.getSpatialTransform() How can I do the same thing directly in C++ instead of in Matlab? I found a solution to this problem: OpenSim::JointS...

jimmy wrote: myModel = Model('c:/.../gait2354.osim')
shoulderJoint = CustomJoint.safeDownCast( myModel.getJoints().get('rightShoulder') );
transformShoulder = shoulderJoint.getSpatialTransform()

How can I do the same thing directly in C++ instead of in Matlab?

Hi, Is it possible to use a combination of Matlab and OpenSim in Linux? I would like to do this because I also need a third program for which I only have a Linux license. I installed OpenSim in Linux by building it from source. Then I set up Matlab following the instructions of http://simtk-confluen...

Hi, I want to use the Matlab-OpenSim interface in Linux, but I always get an error (screenshot in attachment). I folowed these instructions: http://simtk-confluence.stanford.edu:8080/display/OpenSim/Scripting+with+Matlab . However they are written for Windows. In Linux, I cannot locate the org-opens...

Ok, I have rebuild everything as you suggested. Now, building the RUN_TESTS project is way better. In debug mode, most of the tests pass. Only 1 failed, and 3 had a timeout (the VS output can be found in the attachment). The error screens that I had before don't show up anymore. In RelWithDebInfo mo...

Ok, now I can run the example. Suddenly a screen pops up that tells me: testSerialization.exe has triggered a breakpoint . The break seems to appear at line 574. So far, the cmd screen has printed 5 lines: 'hell' 'there' '1.234e5' '-infinity' (hell,there,1.234e5,-infinity) The output of Visual studi...