Vernier Spectro Pro - Manual (Page 14)

How To
16 Spectro Pro
Sometimes the plotted data will extend off the screen. The arrows at the
ends of the vertical and horizontal axes can be used to scroll across the
data. Using the scroll arrows is equivalent to changing both extremes of
the axis limits at the same time while maintaining the same interval
between extremes.
The default plot will usually be the sensor output as a function of time or
a prompted input. You may want to plot some other quantities. Click
either on the x- or y-axis label to get a check box list of all the possible
quantities for plotting. Some combinations will not be useful. If you
don’t see what you want to plot, you may be able to create a new column
of data based on the raw data. See create new columns below. Once
you’ve defined a new column you can plot it.
If you double-click on a graph, you will get a dialog box that allows you
to change a number of graph options. Brief descriptions follow; for
additional information see Spectro Pro reference.
The following functions are found on the Graph Options dialog. Double
click a graph to open this dialog box.
Select point protectors as desired. A point protector outlines a data point.
You may want to outline every 5
th or 10 th point to keep the graph from
getting crowded.
Adding a legend opens a floating box holding a key to the plotted data.
Select the Connecting Line option to connect data points with lines.
Without this option selected individual data points are visible.
Select or deselect the grid as desired. You can also adjust the line style
and color of the gridlines in this dialog box.
Select or deselect the Graph Title option as desired. Spectro Pro
attempts to create a title for a graph based on the axis labels, but you can
override the automatic title by entering text in the Graph Title field.
Scroll to a new portion of
graph without rescaling
Change what is plotted
Change other graph options
See data points directly (point
protectors)
Add/remove a legend
Connect data points
Add/remove the grid
Graph title