Hi Julia, You *could* assign residual forces to one of the segments about the knee, or perhaps at the knee joint, but that's not really what the residual forces are for. You can think of them as a general "What forces need to be added to keep the model dynamically consistent." For instance, if you w...

<t>Hi Jan-Jurre,<br/> <br/> The version shouldn't be an issue if you're editing bothlegs.osim. One thing that may help is using a text editor that highlights headers in an XML file with different colors. If you're already using one that does that (Notepad++, VIM, etc) but it isn't changing the font ...

<t>Hi Chris,<br/> <br/> There is a way to do this in MATLAB though it's a bit clunky. It's specifically the .xml extension in MATLAB that causes it to load differently than you'd like, not the actual content of the file, so what you could do is iterate through in a loop where you execute system comm...

<t>Hi Travis,<br/> <br/> They're normal text files (I usually save in tab delimited directly from Excel). The catch is that the header must be done exactly right; 9/10 times when one doesn't work for me I've put an extra space in the header or something.<br/> <br/> If you shoot me an email at daniel...

<t>Hi Roedolph,<br/> <br/> You could modify the marker set pretty easily if you want to use it with a standard Helen-Hayes marker set. All you'd need to do is change the names of the markers to match if you're using two posterior pelvic markers (either in your motion capture software or in the xml f...

<t>Have you played with the integrator settings? The default number of steps is 20k - if you use 0.25 seconds as opposed to 2 seconds, it will use up to the same number of steps regardless. Try increasing this and see if it doesn't stabilize your model; I've had luck with this in the past.<br/> <br/...

<t>Hi Daniel,<br/> <br/> I haven't used V3D to export the data yet personally - is there a pipeline command specifically for this or did you just export a text file and alter the format? I'm interested in using V3D as well for export but haven't had a chance to play with it much yet.<br/> <br/> Than...

<t>Hi Daniel,<br/> <br/> It almost sounds like your force data and kinematic data are out of sync; are you certain that differing sampling rates are not at fault? Does the model begin to move upwards at a time point that might make sense in this context?<br/> <br/> Have a good one,<br/> <br/> -Dan</t>

<r>Hi Dr. Habib,<br/> <br/> This is actually something that I saw quite frequently when running larger simulations from the GUI, but it is likely an issue with the XP x64 version after running a quick test; I ran a few larger simulations on a 32 bit machine running XP we have in the lab and didn't e...

<t>Hi Sam,<br/> <br/> I'm on 1.5.5, latest version available for typical download.<br/> <br/> Does that mean that the leak is a graphical thing then? I'm more than happy to run from the command line; next time I work with it I'll use that and report back.<br/> <br/> Have a good one,<br/> <br/> Dan</t>