2.2. Property editing

2.2.1. Edit track

If you once again right-click on the red track, and select the third item: "Edit Track CARPET", a properties window will open in the Tote which allows you to change individual characteristics of this track

At the top of the property window is a row of buttons which run actions on the Track. In this case there is just one button, the one to export the track to the clipboard.

Beneath the button is a list of editable properties for the track, and at the bottom are three buttons to Close the properties panel, Apply the current changes, and Reset the properties to their original values.

As the mouse is hovered over the names of these properties you will see tooltips appear giving more information about each property.

The first editable property provided for tracks is not actually editable, it is an accessor to allow you to drag the track around the chart. Click on the Drag button, then drag the track around the chart with the mouse. Click the Drag button (whose label has now changed to Cancel) again to return to the previous mouse-drag mode (such as zoom-in). Please read the section below on track-shifting. The DTG toggle-button indicates whether DTG information should be plotted on the track being dragged.

Track-Shifting.The track-shifting function has been incorporated to allow users to move a track and its associated sensor data. The principle requirement for this functionality is to enable the user to move the track to a specific geographic reference point (i.e. GPS fix) or to lock the relative position of one track to another using sensor data. This positioning relative to another track is sometimes termed plot-lock or tie-point. The Track-shifting implementation was originally provided by Mr David Gong at NUWC.

Note that in order to see the new location of the dragged track, the offset is permanently applied as soon as the track is dropped. The operation does not wait for the Apply button to be pressed, nor is it cancelled when the Cancel button is pressed.

2.2.2. Set colour

For the colour of the track, [1] a drop-down list of colours are provided. This list consists of the colour set traditionally provided by Debrief (for backwards compatibility) followed by a number of grey shades suited to grids, scales and the background colour of the plot.

Try changing the colour of the track from red to green.

Note that nothing happens to the plot at this point, but the colour in the property window has changed. Click the Apply button at the foot of the Properties window to apply the change, and the plot will update.

Note that if you press Undo on the Edit menu, the track will switch back to red both on the plot and on the property editor. Now press Redo from the Edit menu and your updates will be re-applied.

2.2.3. Set label and symbol display intervals

Also experiment with setting the display interval of labels and symbols. The symbols and labels for positions are switched on at a whole multiple of the indicated interval: so if you select 5 minutes the positions at minutes 0, 5, 10, 15... are switched on, regardless of the Date-Time of the first point on the track.