Fourier MultiLab, Руководство пользователя

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76 Chapter 2 MultiLab Software
The online analysis function will still be active in subsequent recordings.
To remove the online functions, click
Analysis on the menu bar and then click Clear
online functions .
2.6.10. Manual Curve Fitting
The manual curve fit tool enables you to draw a mathematical curve, to change the
curve
’ s parameters until it fits into data set, and to display the resulting equation.
There are four types of mathematical curves you can draw:
Linear
B At y
+ =
Draws a straight line.
Quadratic
C B t A y
+ − = 2
) (
Draws a parabola.
Exponential C Ae y
Bt + =
Draws an exponential line.
Power
C At y
B + =
Draws a line of the time raised to the power of a number from – 5 to 5.
Note : If you want the curve fit equation to start at
0
=
t
, apply the crop tool before
any type of curve fitting (see page 90).
To apply manual curve fit:
1. Click on the Analysis menu, then click Manual curve fit to display
the Manual curve fit dialog box.
2. To select a data set for display on the X-axis, click on the data set’s
name in the X-axis list.
3. To select a data set to display on the Y-axis, click on the data set’s
name in the Y-axis list.
4. Click OK . MultiLab will display the Manual curve fit toolbox at the
bottom of the graph window:
Figure 25: Manual curve fit toolbox