C3D File Conversion

Main Forum
21

Hi,

I release that i also have version 3 onhand, The C3DInput is not know in ver3. Is there any other way i can change the c3d file and import into ver3.

Thanks
*TS

22

Hi,

The import of a c3d file in version 3 of AMS has to be done by the c3d2any converter. The other alternative is to write the marker coordinate in a text file like done in the GaitVaughan model.

Best regards, Sylvain.

23

Hi Sylvain,

My file is a marker data file which is not in text format. So i convert it into c3d which most software allow. Other then the 2 methods you suggust, if there any other easy way i can do with it in ver 3?

*TS

24

Hi,

I don’t see any other way. I think you have to use the c3d2any converter.

Best regards, Sylvain.

25

Thanks for the reply. Think will have to upgrade my ver.

*TS

26

Hi,

Where can i find the Gait Vaughan model?
In the Repository?

*TS

27

Yes, in the repository.

28

Hi,

my marker data in text file?
I want to use Gait lower extremity model…
how do I use the text file directly as an input?
do I need to convert them into c3d file? then how do I convert to c3d.

I nedd to modify this part

[SIZE=3]//This is the input file to the analysis
[/SIZE][SIZE=3]AnyInputC3D[/SIZE] C3DFileData = {
[SIZE=3]AnyString[/SIZE] NameOfFile =“GaitHull”; [SIZE=3]//Write the name of the file here
[/SIZE]FileName = NameOfFile + “.c3d”; [SIZE=3]//add the extension to the file name here
[/SIZE]ConstructModelOnOff = On; [SIZE=3]//If this is set to on it will display the markers but slow down the analysis a lot…
[/SIZE]MarkerUseAllPointsOnOff = Off;
MarkerUseCamMaskOnOff = Off;
PointsScaleFactor = 1/1000;

MarkerLabels = {“RASI”,“LASI”,“RPSI”,“LPSI”,“RTHI”,“LTHI”,“RKNEE”,“LKNEE”,“RTIB”,“LTIB”,“RANK”,“LANK”,“RHEE”,“LHEE”,“RTOE”,“LTOE”};

I already have error message with my existing gait lower extremity model
It is,
[SIZE=1]ERROR(SCR.SCN6)[/SIZE] : [SIZE=1]C:/AMMRV1.0/A…n/E…s/Gai…ity/ModelSetup.any[/SIZE] : OptX=“On”,OptY=“On”,OptZ=“On”, : Unexpected.
Model loading skipped

how do I eleminate to this optimization.

Thank you

Thank you

29

Hi,

If you want to run the GaitLowerExtremity model you will need to translate your text files into a folder structure which match the folder structure created by the C3D object.

The best way to do so would be to find a C3D file load and evaluate the file folder structure and then simpler recreate the same structure in AnyScript.

You can read more about the c3d format at www.c3d.org.

You will not need to recreate the entire structure the GaitLowerExtremity model only make use of a certain part of the setup. If you look for all objects in the model referring to Main.ModelSetup.C3dFileData those are the ones you will need to recreate.

The best would of course be if you had the c3d file… :wink:

The error you get looks like a syntax error an missing ; or similar

Best regards
Søren

30

Hi,

Now my first problem is I could not run the gait lower extremitty orginal work in my computer?
It’s giving me such an errors

Loading Main : “C:\AMMRV1.1\Application\Examples\GaitLowerExtremity\GaitLowerExtremity.main.any”
Scanning…
[SIZE=1]ERROR(SCR.SCN6)[/SIZE] : [SIZE=1]C:/AM…1/A…n/E…s/G…y/CreateMarkerClass.any[/SIZE] : ##X : Unexpected.
Model loading skipped

these errors seems to me the objects are not exist or the name may be wrong.
I didnot make any changes in the original problem but i’m getting this error
Why?Do I need to rename the avove object?##

Then I innactivate the above error lines then i got the flowing

[SIZE=1]Loading Main : “C:\AMMRV1.1\Application\Examples\GaitLowerExtremity\GaitLowerExtremity.main.any”
Scanning…
[SIZE=1]ERROR(SCR.SCN6)[/SIZE] : [SIZE=1]C:/AMMRV1.1/A…n/E…s/Gai…ity/ModelSetup.any[/SIZE] : OptX=“On”,OptY=“On”,OptZ=“On”, : Unexpected.
Model loading skipped

[/SIZE]
I have only 15 markers.
How do I use the 15 of them in which order to make the existing gait lower extremitty marker?
These markers are very similar to gait voughan’s markers.
I prefer to start my work with gait voughan first.But my gait is in an inclined floor.so I got the error of lot of constraints with the model.

Thank you

31

Hi,

Is manual that tells me the markers label or the location of the markers?

Regards
TS

32

Hi,
no, there is no such manual. This is because there is no fixed marker set. You can define any marker at any location to fit your individual experimental setup. The given Gait models in the repository are only examples of such experiments. The first step is to create/change the marker locations in the AnyBody model to fit to your experiments. If your experimental marker kit is fixed this is a once-and-for-all-task.
Best regards,
Sebastian

33

Hi,

I am modify the GaitVaughan markers location but i get the following error when i run the inverseDynamic.
I input a markers file with a longer timing (0.2-3.5). The markers is all around the human.
Infact, this is a motion of bending the upper body with the leg not moving (the leg also have markers on it).

Failed to resolve kinematic constraints (final kin. error = 1.936164E-001)
Constraint no. 0 above error tolerance 0.000001, error = 0.000008. - constr. #0 in ‘Main.HumanModel.BodyModel.Trunk.JointsLumbar.C0C1Jnt.Constraints’
Constraint no. 191 above error tolerance 0.000001, error = 0.027762. - constr. #2 in ‘Main.Model.ModelEnvironmentConnection.JointsAndDrivers.HeelYLDrv’
[SIZE=1]ERROR(OBJ.MCH.KIN3)[/SIZE] : [SIZE=1]D:\AnyBodyModelRepositoryV1.0\Application\Examples\GaitVaughan\GaitVaughan.main.any(134)[/SIZE] : ‘Study’ : Kinematic analysis failed in time step 0

Regards
TS

34

Hello,
it could be related to the initial positions. Please make sure that the model is placed close to the marker positions when you set initial conditions.
Best regards,
Sebastian