Vernier Spectro Pro - Manual (Page 22)

How To
24 Spectro Pro
Double clicking a column heading or the Run heading will open the
Column Options dialog, allowing you to change the column name,
width, color, or digits displayed. Double clicking the Run header will
allow you to choose a column from a list; double clicking a column
header directly will take you to the Column Options dialog for that
column.
If you click in the box for Propagate Changes, all runs for that column
will be affected. Hide Columns will conceal the column in the data table.
You can choose to apply the new point protector to all columns of that
run, all runs for that column, or that column and run only.
You can define rules for columns calculated from spectrophotometer
readings much like you enter formulas in a spreadsheet. The definition
can be entered either before or after the data are collected. These new
columns can be graphed just like any other column, even as data are
being collected. The calculated columns can be used for a variety of
purposes, including graphing calculated data or data entered from the
keyboard. These are described in turn below.
As an example, let us create a calculated column, ln Absorbance, and
then plot a graph of ln Absorbance vs. Time:
First, choose New Column/Formula from the Data menu. You will see
the following dialog box, without the entries you are about to make.
Click on the Options tab to be sure this pane is on top.
Change a column’s name,
color, width, or digits
displayed
Calculate new values from
raw data (new columns)
Calculated data columns—an
example