Search found 30 matches

by Anders Sandholm
Fri Oct 15, 2010 3:13 am
Forum: OpenSim
Topic: muscle fixation reference
Replies: 2
Views: 449

RE: muscle fixation reference

<t>Hi,<br/> <br/> Well, it depends on which model you are using, if you use the once supplied with OpenSim they are based on several publications (muscles and joints). The best thing is that you have references to publications inside the osim file.<br/> <br/> Best way is to open the osim file in a t...
by Anders Sandholm
Sat Sep 04, 2010 1:40 pm
Forum: OpenSim
Topic: CMC dont track ankle
Replies: 5
Views: 1666

CMC dont track ankle

<t>Hi,<br/> <br/> This is a rather strange problem with CMC. IK and RRA gives a good solution for the ankle (motion is gait), now when running CMC and then looking at the joint coordinates (xxx_Kinematics_q.mot file) the right ankle is not tracked. The left one is, but the right one has a very bad s...
by Anders Sandholm
Mon Aug 30, 2010 5:06 am
Forum: OpenSim
Topic: Thelen2003Muscle
Replies: 2
Views: 355

Thelen2003Muscle

Hi

Trying to run the Thelen2003Muscle model, but I cant find any information about activation1 and activation2.

Either where I can find the information or an example would be appreciated.

cheers
by Anders Sandholm
Wed Jun 30, 2010 4:44 am
Forum: OpenSim
Topic: Moment arms
Replies: 6
Views: 934

RE: Moment arms

Hi

Thanks, added an MuscleAnalysis... but.. i cant find any documentation what goes in what file. Is there any documentation of this tool?

My question is where do the moment arm length goes?
PREFIX_MuscleAnalysis_Length.sto ?

cheers
by Anders Sandholm
Wed Jun 30, 2010 2:47 am
Forum: OpenSim
Topic: Virtual markers data
Replies: 2
Views: 263

RE: Virtual markers data

<r><br/> Hi<br/> <br/> Two options, <br/> <br/> 1:If you want them writen to a file, include the xml tag<br/> <include_markers>true</include_markers><br/> under the IKTrail tag in the xml<br/> <br/> 2: If you want to view the error, look at the project <URL url="https://simtk.org/home/visutoolopensi...
by Anders Sandholm
Tue Jun 29, 2010 9:43 am
Forum: OpenSim
Topic: Moment arms
Replies: 6
Views: 934

Moment arms

<t>Hi<br/> <br/> Quick question, but there is an option to calculate the moment arms in the plot tool. Now, my question is if there is any setting for any of the tools (like the analyser) that will do this for me and print it to a file.<br/> I looked around but didn't find anything.<br/> <br/> cheer...
by Anders Sandholm
Fri Jun 04, 2010 12:16 am
Forum: OpenSim
Topic: Setting up RRA for a 6Dof joint
Replies: 1
Views: 536

Setting up RRA for a 6Dof joint

<t>Hi,<br/> <br/> I have some problem setting up the Actuators, ControlConstraints and Task file for a 6Dof joint.<br/> <br/> What i have is a 6DoF joint, but there is no <function> in the <TransformAxis>, instead we solve the IK in a special IK tool, which gives the rotation and translation for eac...
by Anders Sandholm
Wed Jun 02, 2010 7:53 am
Forum: OpenSim
Topic: Getting Data in trc format
Replies: 3
Views: 333

RE: Getting Data in trc format

Hi

Also check out b-tk, it support c3d file, can export in openSim format. It also support all types of force plates.

http://code.google.com/p/b-tk/wiki/MokkaUserGuide

check it out,
cheers
by Anders Sandholm
Thu May 27, 2010 1:40 am
Forum: OpenSim
Topic: Calculated marker position from IK
Replies: 10
Views: 1824

RE: Calculated marker position from IK

<t>Cool, let us know if you find any bug or if you are looking for anything special.<br/> <br/> Now, the error is not really calculated, what we do in the vis tool is to calculate this. What you see in the GUI is your IK marker and the models marker. When the IK is solved you get the joint angle, in...
by Anders Sandholm
Thu May 27, 2010 12:11 am
Forum: OpenSim
Topic: Calculated marker position from IK
Replies: 10
Views: 1824

RE: Calculated marker position from IK

<r>Hi<br/> <br/> Well, its not that simple and depending on how you want to see it (the values or just an estimation, if just and estimation, check out "A Visualization Tool for OpenSim", <URL url="https://simtk.org/home/visutoolopensim/">https://simtk.org/home/visutoolopensim/</URL> there you can c...