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Tracker 5.0 released post and replies

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Upgrade to Tracker 5.0.3 - Apr 21 at 4:14PM
Douglas Brown Avatar
Douglas Brown
168 Posts

Hello Tracker users,

The Tracker 5.0.3 upgrade is here and I recommend that you upgrade soon as this fixes a couple of important bugs. It also improves autofilling data gaps (missing steps) and adds several new preferences including default point mass footprint, trail length, and data gap options.

To upgrade click the green "Now available" button on the toolbar and choose Upgrade Now. If you don't see the button then open the preferences dialog, go to the General tab, and click the Check Now button. You can also download the tracker-5.0.3.jar from the Tracker home page and copy it manually into your Tracker directory if all else fails. ;-)

Full installers are also available for Windows, Mac and Linux from both the Tracker home page (http://physlets.org/tracker/) and ComPADRE (http://www.opensourcephysics.org/items/detail.cfm?ID=7365).

Keep on trackin'  Doug


Tracker 5.0 ready for action! - Mar 22 at 4:53PM
Douglas Brown Avatar
Douglas Brown
168 Posts

Hello Tracker users,

Tracker 5.0 installers for Windows, Mac and Linux are now available from both the Tracker home page (http://physlets.org/tracker/) and ComPADRE (http://www.opensourcephysics.org/items/detail.cfm?ID=7365).

This is a important upgrade and I recommend you install this new version. Here are the biggest changes and additions:

  • Tracker now runs right out of the box--no separate Java needed
  • Tracker Help is searchable--results include context and links
  • User-settable units (length, mass, time) are displayed in fields, plots and tables
  • Annotation drawings now include labels and easier control of appearance and visibility
  • Calibration sticks are faster to use: click, click, enter to calibrate
  • Tracker no longer requires "legacy Java 6" on OS X

Of course not all changes are additions: QuickTime support has been eliminated. RIP.

If you have any problems or questions concerning Tracker, please feel free to contact me :-)

Cheers! Doug


Replies to Tracker 5.0 ready for action!

Re: Tracker 5.0 ready for action! - Mar 29 9:43AM
David Chandler
6 Posts

I have installed Tracker 5.0 on Ubuntu and am not able to get the calibration stick to work.  I can get one little "+" mark for the first end of the stick, but I can't get the second end to appear.  Is there a trick I'm missing?



Re: Re: Tracker 5.0 ready for action! - Mar 29 11:48AM
Douglas Brown Avatar
Douglas Brown
168 Posts

You're the 3rd person who has reported this problem but I can't reproduce it on my machine. At least one of them wrote that the problem disappeared after using, closing and restarting Tracker a couple times.

Could you please open the Message Log (Help|Diagnostics|Message Log) and see if there are any warnings or errors reported (in pink or red)? I appreciate your help.

Have any others in this discussion group had this problem?  Doug



Re: Re: Re: Tracker 5.0 ready for action! - Mar 30 2:33PM
Panos Vasilopoulos
2 Posts

i have the same problem in  win-10 instalation , in 2 different pcs...
second shift-click on calibration stick tool does not work.
no errors in message log

Post edited March 30, 2018 at 2:36 PM EST.

Attached File: shiftclick.jpg



Re: Re: Re: Re: Tracker 5.0 ready for action! - Mar 30 8:37PM
Douglas Brown Avatar
Douglas Brown
168 Posts

Thank you, Panos. Very good information. It's clear I'd better develop a fix for this issue. Expect to see Tracker version 5.0.2 within a week or two. When you see the notification on your toolbar, click it and choose Upgrade Now.  Doug



Re: Re: Re: Re: Re: Tracker 5.0 ready for action! - Mar 31 7:50PM
David Chandler
6 Posts

I tried it again on both my Ubuntu and Win 7 installations and it worked in both cases.  I don't think I was delusional or seeing ghosts, but the bug does tend to disappear with use, for some reason.



Re: Re: Tracker 5.0 ready for action! - Mar 31 7:58PM
Douglas Brown Avatar
Douglas Brown
168 Posts

I think I found the problem. It works when you are marking the first frame of the video but not later frames. David and/or Panos, can you confirm?  Thanks! Doug



Re: Re: Re: Tracker 5.0 ready for action! - Mar 31 9:06PM
alex ng
4 Posts

i confirm it for windows 7. although i thought it was working ok, it does indeed work only in first frame.



Re: Re: Re: Tracker 5.0 ready for action! - Apr 01 5:27PM
David Chandler
6 Posts

Good observation.  Moving to the second frame I cannot generate a calibration stick.  Moving back to the first frame I can.  As a work-around until you get it fixed I am guessing I could create a stick on the first frame, then go to the frame I actually want to use for calibration and move the endpoints.  ...or I could use the calibration tape.  (I am giving a presentation in two days, so the workaround may be relevant.  On the other hand I look forward to 5.0.2.)



Re: Re: Re: Re: Tracker 5.0 ready for action! - Apr 01 6:17PM
David Chandler
6 Posts

I tried loading previously calibrated older videos.  I am glad to say they work fine.  I also tried out my "create the stick on frame one, then move the endpoints later" strategy and it also worked fine.



Re: Re: Re: Re: Tracker 5.0 ready for action! - Apr 02 10:39AM
Douglas Brown Avatar
Douglas Brown
168 Posts

David and others--here is a link to a new tracker.jar for which the calibration stick bug is fixed:

http://physlets.org/tracker/upgrade/tracker.jar

Just replace the existing tracker.jar in your Tracker home directory.

I have also added an option in the "Actions" tab (previously called "Tracks") of the preferences dialog that enables the previous behavior, ie immediately creating a stick of length 100 image units and placing it in the center of the view.

David, I hope you get this in time for your presentation :-)  Doug



Re: Re: Re: Re: Re: Tracker 5.0 ready for action! - Apr 03 2:02PM
David Chandler
6 Posts

Yes, my presentation is this evening.  Thanks for such a prompt bug fix.  This is a great tool.



Re: Re: Re: Re: Re: Tracker 5.0 ready for action! - Apr 12 1:58AM
Panos Vasilopoulos
2 Posts

It works fine after replacing the .jar file.
Thanks and congratulations for your work!



Re: Tracker 5.0 ready for action! - Apr 04 4:29AM
David Chandler
6 Posts

OK, new problem.

I prepared several trk files for my talk this evening.  When I went to open them during my presentation about half would open.  The other half froze, always at 79%.  Most would pause at 79%, but if it went on to 80% they would go all the way.  Does the freeze point give you a clue what may be happening?

I tried opening by double clicking on the trk files and by opening Tracker directly and trying to open the trk file from there.  Tracker would open, but not the trk file (for the problematic files).



Re: Tracker 5.0 ready for action! - Apr 12 6:01AM
Bill Noussis
2 Posts

I have encountered a quite annoying problem in the Greek translation (version 5.0.2): In the Data Builder tool, when I add a new parameter and then try to change its default name, the procedure always finishes with an "if statement error" message. I have to change the display language to English to be able to add any parameter. I have encountered the same problem in the tool Fit Builder.

Post edited April 12, 2018 at 6:58 AM EST.

Post edited April 13, 2018 at 3:05 AM EST.



Re: Re: Tracker 5.0 ready for action! - Apr 12 5:47PM
Douglas Brown Avatar
Douglas Brown
168 Posts

Thanks for reporting that bug. It affects not only greek, but all languages for which the default decimal separator is a comma. I have found and squashed the bug and will post an upgrade within a few days.  Doug

Bill Noussis wrote:

I have encountered a quite annoying problem in the Greek translation (version 5.0.2): In the Data Builder tool, when I add a new parameter and then try to change its default name, the procedure always finishes with an "if statment error" message. I have to change the display language to English to be able to add any parameter. I have encountered the same problem in the tool Fit Builder.



Re: Re: Re: Tracker 5.0 ready for action! - Apr 22 2:35AM
Bill Noussis
2 Posts

Fixed in version 5.0.3.
Excellent job. Thanks.



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