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Text File | 1998-05-06 | 1.5 KB | 55 lines | [TEXT/ttxt] |
- This application will approximate
- N datapoints by a polynomial of degree M,
- where M is always less than the number
- of data points N. The equation to be fitted
- is of the type :
-
- Y = C0 + C1*X^1 +C2*X^2 + C3*X^3+ .....+ CN*X^N
-
- To use this application:
- 1. Open the application and goto
- data x,y.
-
- 2. Input the x and y values and
- hit the INPUT pushbutton. Continue
- this procedure until all the values are
- entered. If a value is entered incorrectly,
- hightlight the line with the wrong data,
- and push theDELETE pushbutton. Input
- the correct information and then press
- INPUT.
-
- 3. Save the data by hitting the
- save button. All files must be saved
- with the extension txt. Included with
- this application are several examples.
- You can use the READ function and start
- to do some fitting.
-
- 4. Push the Done pushbutton. Set the
- order of the Polynomio to a value M.
-
- 5. Push the pushbutton RUN.
-
- 6. If the M=1, (linear regression of
- the type y=c1*x+c0, the coeff. of correlation R
- will be computed.
-
- 7. You can change the M value...and push the
- Run pushbutton...and the coefficients for the
- polynomio will be computed again !!!
-
- 8. After completing the fit...you can estimate
- the Y value for a given value of X...this can be
- done by pressing y=f(x) pushbutton. In the
- X-editfield...input the number and then press
- Calculate.... Noticed that the inverse
- calculation....i.e., if you know the Y and you
- want to calculate the X value can be also
- determined (PolyNow Ver. 0.2)
-
- 9. Have fun....any problem...send comments
- to : tonymac96@xsn.net
-
-
-