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Date:
2020-04-21 16:51
Priority:
3
State:
Open
Submitted by:
Joel Lanovaz (lanovaz)
Assigned to:
Nobody (None)
Summary:
Motion files from IK do not load into motion textbox/slider control

Detailed description
OpenSim 4.1, OS: Windows 10

We are having an issue with IK motion results not being loaded properly when using "Load motion".

The IK seems to run OK with this model and right after the IK is done, the results appear in the navigator tree and you can play the motion normally using the motion slider control. The mot file output from the IK is correctly formatted.

However, if you close and then restart OpenSim and re-open the scaled model, when you select "Load Motion" and select the IK mot file, it loads into the navigator window properly but DOES NOT load into the motion textbox and the motion slider control is inactive.

As was stated eariler, the mot file appears to be perfectly fine. We think this could be an issue with this model, as we don't see this on some of the sample models provided with OpenSim, but this is still very odd behaviour given that the motion runs fine as long as you don't exit after running IK.

We have included the scaled model, the trc, the IK set-up and one of the IK mot outputs.

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Message  ↓
Date: 2020-04-21 21:02
Sender: Joel Lanovaz

Removing one of the wrapping bodies for that muslce (the PL wrapping body attached to the proximal row) solved the problem. Thanks. For future reference, what would be the best way to capture the fact that the visualizer was tripped by an error like this?

Date: 2020-04-21 19:28
Sender: Ayman Habib

The issue has to do with the PL muscle which has two Ellipsoid wrapping object that produce erroneous wrapping that trips visualization. For IK all muscles are unused anyway. Please reduce this model to minimal that reproduce the issue and resubmit so we can troubleshoot without sifting through 100+ muscles

Attachments:
Size Name Date By Download
1.6 MiBP18 Scaled (model v12) v10 12 Hz.osim2020-04-21 16:51lanovazP18 Scaled (model v12) v10 12 Hz.osim
16 KiBP18 IK CD3 settings v5 12 Hz TEST.xml2020-04-21 16:51lanovazP18 IK CD3 settings v5 12 Hz TEST.xml
914 KiBP18 CD3 12 Hz.trc2020-04-21 16:51lanovazP18 CD3 12 Hz.trc
624 KiBiktest_apr21_d.mot2020-04-21 16:51lanovaziktest_apr21_d.mot
Field Old Value Date By
File Added705: P18 Scaled (model v12) v10 12 Hz.osim2020-04-21 16:51lanovaz
File Added706: P18 IK CD3 settings v5 12 Hz TEST.xml2020-04-21 16:51lanovaz
File Added707: P18 CD3 12 Hz.trc2020-04-21 16:51lanovaz
File Added708: iktest_apr21_d.mot2020-04-21 16:51lanovaz
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