# Troubleshooting: Track editor

Issues

▪When I select a sample in the Sample List, the corresponding point in the track is not highlighted

▪I try to move a point, but nothing happens. The software moves a point at an earlier time stamp

▪When I select a group of samples of one subject, samples of another subject are also selected

▪I no longer see the Track editor toolbar

▪When I click to jump to another time, video update takes very long time

When I select a sample in the Sample List, the corresponding point in the track is not highlighted

In other words, when double-clicking a row in the Sample List, the corresponding point stays as a filled symbol (left), while it should be highlighted (right).

This occurs when the trials were recorded with EthoVision XT 17 or an earlier version. If that is the case, and provided that you still have the associated video files, clear the trials and re-do them using the same video and settings. See Redo a trial

I try to move a point, but nothing happens. The software moves a point at an earlier time stamp

You may have noted that when you click the point you want to move, the cursor on the Sample List (indicated with a green row) jumps to another time stamp. In the video image, the point is no longer highlighted (see an example with the nose-point in the following picture):

This happens because multiple samples overlap in the small portion of the image where you click. It is more likely to happen when you visualize the last few seconds of a track.

Solution: In the Track Plot Settings pane on the right, under Filter select Last and enter 0 next to seconds. This way, only the current sample, that is, the one highlighted in blue in the Samples List, is selected.

tip To select the nose point, hover with the mouse until the tip of the mouse cursor is near the tip of the triangle. To select the tail-base point, hover the mouse next to the lower-right corner of the square. When the mouse cursor is near the point, a four-headed cross symbol appears. Drag now the point to the new position.

If the actions outlined above do not solve the issue, it may be that the trials were recorded with EthoVision XT 17 or an earlier version. If that is the case, and provided that you still have the associated video files, clear the trials and re-do them using the same video and settings. See Redo a trial

When I select a group of samples of one subject, samples of another subject are also selected

This occurs when you draw a box to select a group of samples, and the Filter option Last ... seconds is set to a value greater than zero. In that case EthoVision XT also select the samples of other subjects that lie within the box, and have a time stamp within the interval set in the Last ... seconds option. This makes it likely that you move or delete points of other subjects unintentionally.

Solution: Set the filter to Last 0 seconds.

If the problem still occurs it is because the body points of two subjects are very close to each other, and those subjects appear in the Samples List. To avoid this issue, de-select the subject you are not editing from the Samples List.

I no longer see the Track editor toolbar

1.Close EthoVision XT.

2.In the experiment folder, locate two files with extension POS and POB, respectively. Delete both files.

3.Start EthoVision XT and open the experiment.

When I click to jump to another time, video update takes very long time

Do one or more of the following until the problem is solved:

▪From the Apps screen, under Windows System, click Run, type in dxdiag and click OK. After the diagnostic procedure has been completed, click Exit.

▪Restart the PC and have the computer enter hibernation mode. Then resume the PC and start EthoVision XT.

▪Upgrade the video graphics card drivers.

▪Change the video graphics card. Contact Noldus Information Technology for information.

▪See also System requirements: Hardware