Vaisala Spectrum 4.0 - Manual (Page 54)

Working with Graphs
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To change the graph font:
1. Select Tools>Options, then choose the General tab.
2. Click the Graph Font... button.
3. Select the desired Font, Font style, and Size.
4. Click OK.
5. If the font style and size are inappropriate, choose Restore Defaults.
Zooming In
Zooming allows you to look closer at a portion of the currently-displayed
graph. It also enables you to eliminate extraneous data and produce a graph and
a tabular printout that cover a set time period, such as 24 hours.
You can zoom-in two ways:
• Use the zoom selection box. This is the quickest and easiest way to zoom.
• 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. For instructions on using this option, see Zooming
In by Formatting the Time Scale on page 50).
Zooming In Using the Zoom Selection Box
To zoom in on the graph using the zoom selection box:
1. Do one of the following:
• Select Format>Zoom-in.
• Press F9.
• Right-click the graph, and then select Zoom-in.
• Click the Zoom-in icon on the toolbar ( ).
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.