This blogpost will outline the main function of the timeline viewer, including the main viewer, crosshair and tier name panel (including showing/hiding tiers)
Timeline viewer
The timeline viewer displays
the tiers and their annotations, whereby each annotation corresponds to a
specific time interval. It is possible to jump to a certain point
in the annotation file by clicking anywhere in the timeline viewer. The total width
of this viewer represents the total duration of the media, thus making it
possible to roughly estimate where to jump to (e.g. at 3/4th of the media).
The timeline viewer can also
be zoomed by using the slider at the bottom right hand corner of the screen. Since
the level of coding detail we are aiming for is high, typically, the timeline
viewer is set to a minimum zoom level of 300% (roughly half way). Another way to access the
zoom feature is by right clicking anywhere in the annotation section and
clicking zoom.
Crosshair
During playback, a red
vertical bar, the crosshair, moves through the annotations and indicates the
current point in time, within the timeline viewer. Normally the crosshair will
start from the left if it reaches the right side of the viewer. One
way to quickly inspect the annotation file is by dragging the crosshair from left
to right.
Tier Name Panel
The tier name panel to
the left of the timeline viewer gives an overview of the different existent
tiers. One of the tiers in the panel is always active (indicated by its
underlining and red color), which means that new annotations will be added to
this tier. To change the active tier, double click on another tier.
Figure 1: Image depicting the timeline viewer, tier panel and crosshair
It is also possible to show or hide certain coding tiers within the tier panel. This is useful when focusing on a specific participant (e.g., parent vs infant).
To show/hide tiers, right click on the tier panel and select ‘show/hide more’. This will display a dialog box. Tick/untick the tiers you wish to view or hide and click ok.
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