Vaisala vLog 4.5 - Manual (Page 80)

Displaying and Creating Graph Files
74 © 2011 Vaisala Canada Inc
• Use the Format | Time Scale option. This gives you precise
control over the X-axis time scale of the zoom. You can
zoom-in by entering exact start and end times and dates.
To zoom in on the graph using the zoom selection box:
1
Select Format | Zoom-in ( or F9). A vertical line
appears on the graph.
2 Use the mouse or arrow keys to move the vertical line to
the beginning of the section you want to zoom-in on..