Search found 89 matches

by Andrea Morelli
Wed Dec 12, 2018 7:06 am
Forum: OpenSim
Topic: scaling using bts bio-engineering marker set
Replies: 2
Views: 247

Re: scaling using bts bio-engineering marker set

Hi Rufaida!
I'm a BTS customer too.
You need to open the marker protocol you use from tracker application and change the name to reflect the marker's name in Opensim.
You can contact me in private if you need any help

Andrea
by Andrea Morelli
Wed Oct 31, 2018 9:18 am
Forum: OpenSim
Topic: Scaling Issues on new version
Replies: 1
Views: 177

Re: Scaling Issues on new version

Hi Amy. Seems that you have a similar trouble described here... https://simtk.org/plugins/phpBB/viewtopicPhpbb.php?f=91&t=9685&p=0&start=0&view=&sid=b263e44391fb671af284ca7ff1f99952 in Christopher Dembia answer. If you open example models from Opesnim 4.0 they works... but if you import "old" model ...
by Andrea Morelli
Sat Oct 20, 2018 5:59 am
Forum: OpenSim
Topic: Phyton Script and PLOT
Replies: 0
Views: 161

Phyton Script and PLOT

I "created" a script based on the example in the opensim folder. There's any guide/manual where to find tutorial or example that permit to scale charted data into the PLOT ? I would like to rescale the "x axis" for an interval for example from time=2.5sec to time=3.5sec and to manual scale the Y axi...
by Andrea Morelli
Tue Jul 31, 2018 12:58 am
Forum: OpenSim
Topic: Paper model definition... some help and is it available ?
Replies: 2
Views: 301

Re: Paper model definition... some help and is it available ?

Hi James.
Thank you for your reply.
I will try to contact also the author.
I did post here because I think lot of people can be interested about the model and my "question" and can contribute to that.
Thank you
Andrea
by Andrea Morelli
Mon Jul 30, 2018 7:59 am
Forum: OpenSim
Topic: Paper model definition... some help and is it available ?
Replies: 2
Views: 301

Paper model definition... some help and is it available ?

I was reading the paper "Elevated gastrocnemius forces compensate for decreased hamstrings forces during the weight-acceptance phase of single-leg jump landing: implications for anterior cruciate ligament injury risk" from Kristin D. Morgan, Cyril J. Donnelly, Jeffrey A. Reinbolt (very nice and inte...
by Andrea Morelli
Fri Jul 27, 2018 3:42 am
Forum: OpenSim
Topic: GRF application...
Replies: 0
Views: 271

GRF application...

Sorry for the silly question... I see lot of example where the GRF during walking and running are applied to the calcaneus.... In a simulation where I run on the "toe" for example barefoot, without heel strike or in a jump done without the heel on the ground I should apply the force to the calcareou...
by Andrea Morelli
Fri Jul 27, 2018 3:37 am
Forum: OpenSim
Topic: Publicly available example
Replies: 3
Views: 193

Re: Publicly available example

Hi! I try to download the model but I have an error both on Opensim 3.3 and 4.0.... "MovingPathPoint:: Components of the same path point must depend on same the coordinate. Condition: x_coordinate == y_coordinate == z_coordinate FAILED." Is someone able to find where the code is wrong ? Thank you An...
by Andrea Morelli
Wed Jul 25, 2018 9:20 am
Forum: OpenSim
Topic: Static Optimization during a squat jump
Replies: 1
Views: 656

Static Optimization during a squat jump

Good morning. I'm doing an analysis on a squat jump (countermovement). I did scaling, IK, RRA, ID and CMC and now performing SO. I use model 2392 (added 2 DOF at the knee with knee adduction and rotation). All seems work fine but during SO I have this results time = 8.771 Performance =2910.08 Constr...
by Andrea Morelli
Wed Jul 04, 2018 12:20 pm
Forum: OpenSim
Topic: problem with scaling
Replies: 9
Views: 604

Re: problem with scaling

Hi! Did you try to import the trc data with the preview into opensim? Seems that experimental data orientation axis is different than the model axis.

Andrea
by Andrea Morelli
Wed Jul 04, 2018 7:47 am
Forum: OpenSim
Topic: RRA analisys in a lateral drop jump
Replies: 1
Views: 315

Re: RRA analisys in a lateral drop jump

I did transformed the data (Yes, I did a mistake for the lateral drop jump not rotating the experimental data with model reference) in this manner the pelvis rotation is correct. I did rotated also the GRF. Repetaed the IK for noth right and left lateral drop jump but the RRA results is still high i...