Thank you Thomas. This webpage has more information and explains the weights on the coordinates. I was misled by the previous documentation page of the C++ API. I understand now that this is doing something different from what I thought. I will reflect and see if I want to investigate the other opti...

Hi Dimitar, Thank you for your reply. We looked at the PR and are waiting to be completed (if it happens) You are right about end-effector IK. We want to "specify the end effector position and orientation and perform the inverse kinematics". We are doing it already by using a workaround where we cre...

Hi again, I had a look at the AssemblySolver class but the problem remains the same. I still cannot add only a weight to a Coordinate without giving a value to it. This approach is therefore not appealing to me since the Coordinate values is what I am trying to get through the inverse kinematics pro...

Thanks Thomas. I will look into it

Hi, I have a question regarding inverse kinematics. I know and have been using the C++ API for performing traditional inverse kinematics using markers placed on (almost) all segments. But now I would like to try to solve a motion where only the end-effectors segment (hands, feet and head) are known....

Hi, I am using the C++ API to build and solve a model. I would like to assign weights to the coordinates of my model. I saw that it is possible when I look at the detailed description section of the InverseKinematicsSolver class (https://simtk.org/api_docs/opensim/api_docs/classOpenSim_1_1InverseKin...

Hi, I am trying to solve the fingers with only markers on the metarcarpal and the finger tips. I am using the c++ simtk library (including simbody) I set all the joints with 1 DOF except for the first joint of each finger which has a 2nd DOF for abudtion-adduction When I am doing that and performing...

Hi again,

Thanks for the information and the link.
Will be tricky because of my axis convention but will investigate.

Thanks

Vincent

Hi Thomas

Thank you for your quick and clear reply.
So if I want to use a simple pin joint around the x axis, is it already available or should I use the custom joint? The Pin Joint class documentation is said to be only the Z axis...

MANY MANY Thanks

Vincent

FYI, if it can help

This is what what i did and it works for me
viewtopicPhpbb.php?f=91&t=9061&p=0&start=0&view=

Vincent