A Timeline allows visually tracking down and controlling playback clock.
Timeline
The options for this component are described on the next table.
Available options on the Timeline
Option |
Description |
|---|---|
Ruler |
Displays a time line. Users can move this time line from side to side by clicking and dragging the mouse pointer. Zoom is controlled by the mouse wheel. Moving it up is equivalent to zooming in. Moving it down is equivalent to zooming out. Users must first click time line's background before trying to zoom in or out. When pressing the CTRL key, a zoom operation is performed three times faster |
Cursor |
Marks the current position of playback clock. When playback is in Pause mode, users can drag the cursor from side to side, changing playback clock while dragging the cursor. It is always visible on the time line |
Query Bar |
Displays periods of time that already have loaded data: •A light green line means that, on this period, data is fully loaded •A dark green line indicates that data from this period is currently loading •A light yellow line indicates that this period contains some loaded data. New database queries are needed if the cursor is moved over that period •A light gray line indicates that the period contains no loaded data yet. To load data from that period, move playback cursor over it |
Data Bar |
Indicates with a blue dot each moment when there is a playback event |
General Zoom Bar |
Displays the period of data currently displayed on the Timeline, compared to the total period of data available for playback |
In case a Tag's Display chart in Timeline option is selected on the Event List or Tag List, a visual representation of this Tag is displayed on the left side of the chart. This representation varies according to Tag's data type:
•String: Displays text boxes with Tag names
•Boolean or Digital: Displays a status chart of a Tag, where Tag's value is drawn over a bottom line (Off or False) or over a top line (On or True). Chart's line remains dotted on periods where Tag quality is bad
•Double, Integer, or Analog: Displays a line chart with Tag values. Chart's scale (bottom and top) is calculated automatically according to Tag values already retrieved by E3Playback on a database. As in a digital chart, chart's line remains dotted on periods where Tag quality is bad. This line can be interpolated or in steps, depending on a Tag supporting (Storage) or not (Historic) interpolation
Display chart in Timeline
Every Tag added to a Timeline contains an automatically defined color, which can be changed by using the Change color option on its contextual menu. This option opens the system's Color dialog box, allowing to select a new color or customize the selected color.