Toggle Box Zoom

The Toggle Box Zoom button switches between Box Zoom mode and normal interaction mode. In Box Zoom mode, you can define an area of the chart to zoom in on for more detail.

1. Select the pen to zoom in on.
2. Click ToggleBox Zoom on the navigation toolbar.

3. 

   The cursor changes to a cross.

3. Click and drag the bounding box to enclose the part of the data you want to zoom in on, as shown below.

4. 

4. Release the mouse button. The display changes to a close-up of the selected data.

5. 

5. To exit Zoom mode, click the Toggle Box Zoom button.

Depending on whether the pens are locked or unlocked, the Toggle Box Zoom commands works differently:

• For locked pens, the zoom is applied to pens in the horizontal date/time axes. If an analog pen is being zoomed, the zoom is applied to the vertical (value) axis of non-autoscaled analog pens in the pane in which the zoom box was initiated.
• For unlocked pens, the zoom is applied only to the selected pen in both the date/time and vertical (value) axes. The value axis is only affected if autoscale is off.

• Note: Vertical zoom is only applied to analog pens, since it has no effect with alarm or digital pens.