MATLAB study notes the tenth chapter--Curve fitting

1. Call Polyfit to have matlab calculate the coefficients of the polynomial that fits the data.

y = mx + b, which requires m and B values, we can use a Matlab function called Polyfit (x, y, N), where n is the number of times we want Matlab to find the polynomial, for y = mx + b equation, we set n equal to 1, So the statement that is called will be Polyfit (x, Y, 1).

2. You can use the Find command to ask questions about your data.

3. Fitting of exponential function

W = log10y

z = x
The data is then fitted in the following form: w = p1z + p2. The coefficients P1 and P2 are generated by calling Polyfit. This fit can be produced in MATLAB using the following command:
p = polyfit (x, log10 (y), 1), we can find m and b:m = P1, B = 10p2

MATLAB study notes the tenth chapter--Curve fitting