Vernier Spectro Pro - Manual (Page 43)

Spectro Pro Reference
Spectro Pro 8
After setting the new column name and units, formula-based new
columns require a defining formula. The definition tab allows you to
define new columns based on other columns using an equation. To
create a new column based on an equation, enter the desired relationship
in the equation field. The contents of existing columns can be chosen
from the Variables menu, and common mathematical functions can be
chosen from the Function list.
The functions include several appropriate to columns of data:
integral
The integral function gives the running sum of the product of point
values and the increment of the independent variable, which is usually
time. That is, it delivers the numerical integral of the data column.
trigonometric
Trigonometric functions like sine, cosine, and tangent are included.
smooth
The smooth function reduces noise in the indicated column. The number
of points used for a moving average is controlled in Options found under
the Experiment menu.
initial
The initial function inserts the value of the first row of data and for all
rows of data. This can be used to create an automatic offset so that a
column of data is relative to its starting value. For example, "Dist" -
Initial ("Dist")
will generate a column of data where position is relative to
the starting position instead of absolute.
sum
The sum function adds the values for all rows up to and including the
current row.
New Column
Ж Ж Formula