Get array from a function

Question

TTA 2022-12-15

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1879347-get-array-from-a-function

移动：Walter Roberson 2022-12-15

采纳的回答： Walter Roberson

在 MATLAB Online 中打开

I have this matlab code below and the result is attached.

please I need to get the red line in the attached figure in a form of array

[x, y] = titanium;
gEqn = 'a*exp(-((x-b)/c)^2)+d';
startPoints = [1.5 900 10 0.6];
[fj,gof,output] = fit(x',y',gEqn,'Start', startPoints, 'Exclude', [1 10 25]);
plot(fj,x,y)

Thanks

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Answer 1

Walter Roberson 2022-12-15

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1879347-get-array-from-a-function#answer_1129157

移动：Walter Roberson 2022-12-15

在 MATLAB Online 中打开

[x, y] = titanium;
gEqn = 'a*exp(-((x-b)/c)^2)+d';
startPoints = [1.5 900 10 0.6];
[fj,gof,output] = fit(x',y',gEqn,'Start', startPoints, 'Exclude', [1 10 25]);
xmin = min(x);
xmax = max(x);
NumberOfPoints = 250;
xfit = linspace(xmin, xmax, NumberOfPoints);
yfit = fj(xfit);

That is, if you use the cfit object as-if it is a function, then it accepts values of the independent variable and returns corresponding fitted values.