fit function to data
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Hello, please, if you could help me to fit a function to a data series, I understand that the matlab 'fit' function works excellent, but I don't know how to implement it. What I have to do is fit the best possible function to the data series, but the problem that I have two series 'x1' and 'x2', e 'y1' and 'y2', where they all go in a single figure, for which I write down the code I have. I attach the data. Thanks greetings.
load x1.txt , load x2.txt , load y1.txt , load y2.txt
plot(x1,y1,'or',x2,y2,'or')
回答（1 个）
Sulaymon Eshkabilov
2021-6-25
load x1.txt , load x2.txt , load y1.txt , load y2.txt
plot(x1,y1,'or',x2,y2,'b*') % Differentiate different data sets while plotting them
FM1=fit(x1,y1,'poly2'); % Quadratic fit model
FM2=fit(x2,y2,'poly2'); % Quadratic fit model
...
2 个评论
ibt
2021-6-25
Walter Roberson
2021-6-25
x = [x1(:);x2(:)];
y = [y1(:);y2(:)];
FM = fit(x, y, 'poly2'); % Quadratic fit model
plot(FM, x)
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2021-6-25
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