On the X axis there are various buttons for the navigation:

Zoom function

Scroll

Jump to a date

If the HD trend graph is used in ibaQPanel, the events can be displayed as text channels together with both time- and length-based HD trend graphs.

For further information, see chapter ibaHD-Server in ibaQPanel.

Zoom function

In the pause mode, the <+>-button enlarges the center of the X axis and in the live mode the last part of the X axis. The <-> button reduces accordingly. The default value of the zoom factor is 2. This means if the section of the X axis is enlarged, it is half as large as the original section, if it is reduced, the section of the X axis is twice as large as the original section. The zoom factor can be modified via the X axis properties.
Scroll

Scrolls in large steps to the left, starting from the current position

Scrolls in small steps to the left, starting from the current position

Scrolls in small steps to the right, starting from the current position

Scrolls in large steps to the right, starting from the current position

The step can be set via the X axis properties. The default setting for little steps is relative 0.75 and for large steps relative 2. Alternatively, the step can be set as absolute value in hh:mm:ss time units for time-based values and in meter for length-based values.

Example: If the X axis indicates a range of 100 s and if the time stamp goes to 10:00:00, a small step jumps to the left by 75 s on 09:58:45 and a large step to the left by 200 s on 09:56:40.

The functions zoom and scroll can be carried out with the help of the keyboard:

Button

Key

Description

<+>

enlarging

<–>

reducing

Page up

small step to the right (only in pause mode)

No key function

large step to the right (only in pause mode)

Page down

small step to the left

No key function

large step to the left
Jump to a date

Clicking the button opens a calendar where you can enter a date and time on second basis.

With a click on the arrow to the right, the display of the trend graph jumps to this time point.

This function is also available on length-based HD trend graphs because the time stamp is always stored along with the length-based data.