Search found 2252 matches

by Ayman Habib
Tue Jul 15, 2008 11:32 am
Forum: OpenSim
Topic: Cost function.
Replies: 10
Views: 2203

RE: Cost function.

<t>Hi Andrea, <br/> <br/> In this context (tracking), the cost function referred to is the function used in CMC to resolve the redundancy (too many muscles for the number of degrees of freedom). For now this function is fixed but we plan to expose this function (allow users to provide their own) in ...
by Ayman Habib
Wed Jul 02, 2008 9:47 am
Forum: OpenSim
Topic: MarkerSet
Replies: 19
Views: 5051

RE: MarkerSet

<t>Hi Pablo, <br/> <br/> Markers are included in the model file (.osim) under the xml tag <br/> <MarkerSet name=""><br/> <objects><br/> <Marker name="Sternum"><br/> <!--Body segment in the model on which the marker resides.--> <br/> <body> torso </body><br/> <!--Location of a marker on the body segm...
by Ayman Habib
Sat Jun 14, 2008 12:10 am
Forum: OpenSim
Topic: Extending graphics output and models
Replies: 2
Views: 531

RE: Extending graphics output and models

<t>Dear Rene,<br/> <br/> Currently, the gfx environment is not extensible (or there is no exposed API). What you're trying to do, however, will be possible when we expose OpenSim as a public API so that you can link the OpenSim libraries to any other software platform you're familiar with. This (exp...
by Ayman Habib
Mon Jun 09, 2008 1:25 pm
Forum: OpenSim
Topic: Segment definitions in osim file
Replies: 1
Views: 1042

RE: Segment definitions in osim file

<t>Hi JunJay, <br/> <br/> OpenSim model file does not contain lengths, as these are not used by OpenSim. The attachment of different segments to their parents in the linkage are stored in the OpenSim file with every joint that attaches the segment to its parent (e.g. below). If you assume attachment...
by Ayman Habib
Thu Jun 05, 2008 9:01 am
Forum: OpenSim
Topic: a question about install SDFast
Replies: 1
Views: 291

RE: a question about install SDFast

Hi,

SDFast is a commercial package distributed by Parametric Technology Corporation, if you want to use it you'll have to buy it separately.

Good luck,
-Ayman
by Ayman Habib
Thu Jun 05, 2008 8:57 am
Forum: OpenSim
Topic: musculotendon length calculations
Replies: 1
Views: 623

RE: musculotendon length calculations

<t>Hi Tim,<br/> <br/> If you make a motion file with one frame per pose that contains a column for each coordinate and load it, you can use the plotter to create the curves for muscle tendon lengths thru the motion (for the muscles you care about). Then you can export the data to a storage file usin...
by Ayman Habib
Thu Jun 05, 2008 8:50 am
Forum: OpenSim
Topic: Linux version? And suitability question.
Replies: 5
Views: 841

RE: Linux version? And suitability question.

<t>Dear James,<br/> <br/> Thanks for your interest in OpenSim.<br/> <br/> Although we have been able to build and use the software on Linux, most of the testing is done on Windows machines as of now and so we didn't feel we tested the Linux environment enough to release a build. This will change wit...
by Ayman Habib
Sat May 17, 2008 11:31 pm
Forum: OpenSim
Topic: Error Opening models (even demos)
Replies: 15
Views: 3018

RE: Error Opening models (even demos)

<t>Dear Mark,<br/> <br/> Installing OpenSim on a virgin machine does not reproduce your problem. It's likely an environment issue. Did you have earlier installations of OpenSim on the same machine? If so I'd remove that first before reinstalling. and did you check the box for "Add OpenSim to the use...
by Ayman Habib
Tue May 13, 2008 12:35 pm
Forum: ME/BIOE 485 (Modeling and Simulation of Human Movement)
Topic: C++ Compiler
Replies: 5
Views: 2161

RE: C++ Compiler

Hi Eric,

I'll be helping a couple other people set their environment with OpenSim between 1:00-3:00. Feel free to drop by (we'll be in the kitchen area).

-Ayman
by Ayman Habib
Mon May 12, 2008 12:44 pm
Forum: ME/BIOE 485 (Modeling and Simulation of Human Movement)
Topic: Environment Setup
Replies: 0
Views: 322

Environment Setup

<r>Hi all, <br/> <br/> If you would like to access the OpenSim source to make modifications (e.g. add an analysis to extract joint contact force or similar) please let me know what environment you have (OS/compiler/version e.g. WindowsXP/DevStudio/2003) and what time slots you have available tomorro...