Value (y-axis) zoom

Time zoom allows the adjustment of the required time interval for the time (x-axis) axis. Graphs support the zoom tool that is applied for the y-axis – the so-called value zoom. This zoom allows us to define the required numeric range of the graphic flows to view. It is used like the time zoom. 

To set a y-axis range:

1. Click button - Pointer.
2. Point the graphic cross to the value corresponding to the low interval limit and press the right mouse button.
3. Point the graphic cross to the value corresponding to the high interval limit and press the right mouse button.

The little yellow icon (with a plus sign in the middle) will appear in the graph window after the definition of a new range of the y-axis. If you click on it some buttons will appear. The buttons   and allow to move the y-axis left and right and the button switches the y-axis back to previous range. These buttons are applicable to the axis at which they are activated.

Value zoom can be set also according to the right y-axis if the graphic cross moves on the right side of the graph. If the left y-axis is switched off, the graphic cross displays a Y position according to the right y-axis.

Note: In case the low limit of the defined range is greater than the high limit, there will be displayed initial y-axis range, i.e. the same one as it was on opening the graph window. This feature allows the return to the original graph window – i.e. to the graph with the initial y-axis range.