why some of the built-in function of my matlab (2018b) can not work? like fit, confint...

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Zhuang Xu on 23 May 2019

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Commented: madhan ravi on 23 May 2019

Dear all

as the title, why some of the built-in function of my matlab (2018b) can not work? like fit, confint...

x1=[178 1316 3236 5155 7075 8996 10916 12836 14756 16676 18568]'

y1=[1.0000 1.1848 1.4038 1.6632 1.9705 2.3347 2.7661 3.2773 3.8829 4.6005 5.4507]'

fitn=fit(x1,y1,'exp1')

>> fitn=fit(x1,y1,'exp1')

>>fitn =

[]

Thanks

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Alex Mcaulley on 23 May 2019

Open in MATLAB Online

what is the result of

which fit

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Steven Lord on 23 May 2019

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The fit function used that way is part of Curve Fitting Toolbox, as is the confint function. You most likely do not have this toolbox installed. Check if it is installed using the ver function.

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madhan ravi on 23 May 2019

+1 , also check if you have license for that toolbox

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Release

R2018b

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