Get the curve parameters in the fit function

7 次查看（过去 30 天）
Denise Selegato
Denise Selegato 2018-2-15
评论： hogr muhammad 2022-6-25
How to get the p1 and p2 values after using the fit function. i.e.
[curvepar, fitpar]=fit(rand(100,1), rand(100,1),'poly1')
curvepar =
Linear model Poly1:
curvepar(x) = p1*x + p2
Coefficients (with 95% confidence bounds):
p1 = -0.06171 (-0.2875, 0.1641)
p2 = 0.5492 (0.421, 0.6774)
fitpar =
sse: 9.0309
rsquare: 0.0030
dfe: 98
adjrsquare: -0.0072
rmse: 0.3036
I want the numerical value for p1 and p2? i.e
a=p1; b=p2;
disp(a)

请先登录，再回答此问题。

采纳的回答

David Goodmanson
David Goodmanson 2018-2-15
Hi Denise,
follow that command with
p=coeffvalues(curvepar)
The more 'convenient' they make some of these functions, the harder it is to pry information out of them.
  1 个评论
hogr muhammad
hogr muhammad 2022-6-25
Hello dear David Goodmanson,
thank you for your helpful answer, I appreciate your help.
I want to extend your answer to be more precise for dear Denise,
here it is:
p = coeffvalues(curvepar);
a = p(1); % which displays the value of p1
b = p(2); % which displays the value of p2

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Least Squares 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by