Fourier ImagiProbe, Руководство пользователя

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Chapter 3 Working with MultiLab 75
3.6.5. Statistics
Use the statistics tool to display statistics of a selected data set or a range of data.
The statistics include:
Average
–
The average of all the numbers in the range.
StDev
.
–
The standard deviation
Minimum –
The smallest value in the range.
Maximum –
The largest value in the range.
Sum
–
Adds all the numbers in the range.
Area
–
The area between the graph and the x-axis in the range.
Samples
–
the number of data points in the range.
Rate –
the recording rate.
To display statistics:
1. Use the cursors to select the graph and the data range to which you want to
apply the statistics
2. Click
Analysis
on the menu bar, then click
Statistics
MultiLab will open a statistics window and will display the results in it.
3.6.6. Most Common Analysis Functions
1.Linear fit
Click
Linear Fit
on the main toolbar to draw a line of linear least square fit
b ax y
+ =
and to display the line
’
s equation.
Note
: If you want the automatic curve fit equation to start at
0
=
t
, apply
the crop tool before applying the linear fit (see page 89).
2.Derivative
Click
Derivative
on the main toolbar to construct a graph in which each point is
the slope of the 3 consecutive points on the source graph.
3.Integral
Choose
Integral
from the
Analysis
menu to construct a graph in which each point is
the integral of all the preceding points on the source graph.