Vernier Spectro Pro - Manual (Page 13)

How To
Spectro Pro 8
How To
In the How To section you will learn to perform specific functions in
Spectro Pro. The tasks are organized in six broad categories: graph
appearance, data collection options, non-graph windows, data analysis,
data tables, and saving and printing data.
If you have further questions, go to the reference section and read the
descriptions of the relevant menu items, or check the index for other
references.
Change Graph Appearance
There are many ways that you might want to change the appearance of
the initial graph. The range of the x or y axis might not be ideal. Or, you
might want to plot other quantities on each axis. You can change most
elements of the graph directly by clicking on them, so if you are not sure
how to change a given item, begin by clicking on it and see what
happens. Here are some things you can quickly change on a graph.
Often you will measure some quantity and the plotted line will only fill a
portion of the screen. You can quickly change the range of values plotted
by clicking the numbers at the ends of the graph axes. Type a new value
and press enter.
To make the plotted data fill the graph window for this particular
collection of data, click the Autoscale Once button on the toolbar.
To turn automatic scaling on for all subsequent collections of data
choose View
Æ Set Axes to Autoscale.
To change just the x- or just the y-axis limits, click on the desired axis.
You will see a dialog
box:
Choose the type of
scaling you want.
Autoscale Once will
set the axis limits so
the data just fill the
axis. The origin may
not necessarily be
included unless you
choose Autoscale
from 0, in which case
the origin is always included. Manual scaling allows you to enter the
minimum and maximum limits manually. The choice made here will
determine how Spectro Pro scales a new graph.
To enlarge a portion of a graph to fill the screen, drag across the
desired area with the mouse, leaving a rectangle on the graph
enclosing the area of interest. Then click on the Zoom In button
on the toolbar. If you don’t like what you see, you can reverse the
action by clicking the Undo Zoom button.
The Zoom Out button will double the range of both the x and y
axes. It does not undo a Zoom In—Undo Zoom does that.
Change axis limits manually
Change axis limits
automatically
Zoom in on a graph