extracting data points after fitting

2013 12 11
2 个回答
更新时间：2021 3 17
6 次查看（30 天）

0 个投票

what i did is...i loaded file in command window...defined x and y parameters...
load test.dat x=test(:,1); y=test(:,2); cftool
den i opened cftool
in this window i used "interpolate" in fitting options...which gives an overplot on my original data thus giving me now a continous fitted curve...below it is residual(about 0)... now i want the data points of this fitted curve...how will i do it...??

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回答（2 个）

David Sanchez
David Sanchez 2013-12-11

0 个投票

Save the fitting in the workspace, then:
my_pol = [fitting.p1 fitting.p2]; % insert the parameters from your fitting
X = 0:0.1:10; % define your x data here
Y = polyval(my_pol,X); % your Y data
aditi
aditi 2013-12-11

0 个投票

thanks for replying. i saved the fit in workspace with following names:
save fit to MATLAB object name: fittedmodel2
save goodness of fit to MATLAB struc named: goodness2
save fit output to MATLAB struct named: output2
now what should i do..?? last two commands are not clear to me...m new to MATLAB maybe thats y... :(
also since m fitting with interpolant...there are no parameters I want data points of the fit curve..i.e the new curve

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aditi
aditi
2013-12-11

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Ahmed Alotaibi
Ahmed Alotaibi
2021-3-17

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