Problem with exporting tracking data (csv)

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vgarcia
Posts: 2
Joined: Fri Mar 11, 2016 11:25 am

Problem with exporting tracking data (csv)

Post by vgarcia » Fri Mar 11, 2016 11:33 am

Hi everyone,

I have a problem when I export tracking data as a .csv file with Motive 1.6.0 Beta 1 64 bit. I cannot update Motive software due to my license conditions. When I open that .csv file, the data from the rigid body (position X,Y,Z and quaternion) is always the same but I have moved the rigid body while I was recording the tracking data. Do you know why rigid body data is constant? Is there any option in Motive software that I should check?

Thank you so much.

Best!

Verónica

vgarcia
Posts: 2
Joined: Fri Mar 11, 2016 11:25 am

Re: Problem with exporting tracking data (csv)

Post by vgarcia » Mon Mar 14, 2016 1:55 pm

I have tried with another license I got and exporting tracking data (csv) works with Motive 1.8.0 final. No more constant data. I will use that version.

Thank you so much.

ml-7
Posts: 5
Joined: Wed Apr 27, 2016 6:30 am

Re: Problem with exporting tracking data (csv)

Post by ml-7 » Wed Oct 19, 2016 5:26 am

Hi,
I have similar problems, but with newest Motive:Tracker 1.10.1 Final.

The problem appears after trimming take without moving to zero. It affects all markers, not only rigid bodies.
When I trimmed my take even by 0 frames but turning "Reset frame numbering... to zero", CSV was exported with no errors.

I think the problem is with new Trimming function.
Below I past a part of my take after exporting to CSV without "zero correction".

398,3.316667,137.823380,55.719444,-92.713531,
399,3.325000,141.990356,55.402195,-119.751068
400,3.333333,145.960953,55.143864,-147.639481
401,3.341667,149.821991,54.891041,-176.363678
402,3.350000,153.605850,54.731102,-205.893845
403,3.358333,157.635056,54.684921,-235.734818
404,3.366667,159.825943,54.678261,-251.646484
405,3.375000,159.825943,54.678261,-251.646484
406,3.383333,159.825943,54.678261,-251.646484
407,3.391667,159.825943,54.678261,-251.646484
408,3.400000,159.825943,54.678261,-251.646484
409,3.408333,159.825943,54.678261,-251.646484

steven.andrews
NaturalPoint Employee
NaturalPoint Employee
Posts: 582
Joined: Mon Jan 19, 2015 11:52 am

Re: Problem with exporting tracking data (csv)

Post by steven.andrews » Wed Oct 19, 2016 1:48 pm

Hello ml-7,

I am not sure I see the problem in the bit of CSV that you shared with us here. The values appear to be changing on each row, as expected.

If you continue to see an issue with your exported CSV files, could you please contact us at help.naturalpoint.com?
This will allow us to troubleshoot with you properly.

Thanks,
Steven
--
Steven Andrews
OptiTrack | Senior Customer Support Engineer

Momin
Posts: 1
Joined: Thu Aug 20, 2020 7:32 pm

Re: Problem with exporting tracking data (csv)

Post by Momin » Mon Aug 31, 2020 11:42 pm

What is W in rotation of rigid body in the csv file?

steven.andrews
NaturalPoint Employee
NaturalPoint Employee
Posts: 582
Joined: Mon Jan 19, 2015 11:52 am

Re: Problem with exporting tracking data (csv)

Post by steven.andrews » Tue Sep 01, 2020 11:19 am

Hello Momin,

The W is part of the Quaternion rotation. It can be a little hard to explain, but there are online articles that describe how the calculation works.
https://answers.unity.com/questions/147 ... nxyzw.html

When exporting, you can choose to export as Euler XYZ rotations, which would not contain a W value.

Best,
Steven
--
Steven Andrews
OptiTrack | Senior Customer Support Engineer
help.naturalpoint.com
support@optitrack.com

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