error bar in curve fitted graph

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Debarati Ghosh
Debarati Ghosh 2024-3-29
评论： Sam Chak 2024-4-1
Sir,
I am having two data x and y . After that I have fitted data using curve fitting tool (using polunomial of degree 1). Then I got plot with curve fitted graph. I want to get error in this graph as error bar. How to get?

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回答（1 个）

Sam Chak
Sam Chak 2024-3-29
Ran in:
Use errorbar().
x = (-1:0.1:1)';
y = asinh(x/0.5);
f = fit(x, y, 'poly1')
f =
Linear model Poly1: f(x) = p1*x + p2 Coefficients (with 95% confidence bounds): p1 = 1.576 (1.514, 1.638) p2 = -6.057e-18 (-0.03753, 0.03753)
err = y - f(x);
errorbar(x, y, err), hold on
plot(x, f(x), '--.'), grid on
xlabel x, ylabel y
legend('data', 'fitted poly1', 'location', 'se')
  2 个评论
Sam Chak
Sam Chak 2024-4-1
Hi @Debarati Ghosh, If you find the solution helpful, please consider clicking 'Accept' ✔ on the answer to close the issue.

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