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ANALYSIS OPERATION
TMPM5200-2
6-105
6.13 ANALYSE MENU (DATA PROCESSING FUNCTION)
6.13.1 Fit Polynomial
A graph is approximated by an nth-degree polynomial.
1.
Select Fit Polynomial from the Analyse pull-down menu.
The Enter Polynomial degrees pop-up window will appear.
2.
Enter the degree using the keyboard.
If the number ‘n’ is entered, the following polynomial is used for approximation.
A
n
X
n
+ A
n–1
X
n–1
+ ... + A
1
X
1
+ A
0
= 0
In the case of cubic polynomial approximation,
A
3
X
3
+ A
2
X
2
+ A
1
X + A
0
= 0
is applied.
After completion of the approximation, the resultant curve is overlaid on the
original graph, and the resultant polynomial formula, the standard deviation and the
correlation coefficient are displayed on the right of the graph.
The Enter Polynomial degrees pop-up window will appear again.
If you change values of the polynomial formula, the calculation of polynomial
degrees can be carried out.
Clicking Cancel finishes the operation.
6.13.2 Zoom
A part of a graph is enlarged.
1.
Click on Analyse in the main menu; then select Zoom in the pull-down menu.
A “+” cursor will appear on the graph.
2.
Designate two diagonal points of the area to be enlarged with the “+” cursor.
Then the designated area will be enlarged to the full frame size.
