Get error for fit function (surface) in matlab2021

2022 4 7
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更新时间：2022 4 7
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Hello
I have some data I want to use my code but in matlab2021 it does not work. any idea? It could read data but fit does not wok.
clear all
K=readtable('TEMPLDFC.xlsx');
x = K.(1) ;
y = K.(2) ;
z = K.(3);
f = fit([x y],z,"poly23");
Check for incorrect argument data type or missing argument in call to function 'fit'.

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Walter Roberson
Walter Roberson 2022-4-7
whos x y z
which fit
Please show us the results of the above
Torkan
Torkan 2022-4-7
编辑：Torkan 2022-4-7
Thanks. Attached
surface fit
consider x y z as a double
x= [1;2;3;4;5]
y=[2;3;4;6;7];
z=[2;6;8;10;34];
These are arbitrary I have my excel file where I read my data

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Walter Roberson
Walter Roberson 2022-4-7

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I suspect that you do not have the Curve Fitting Toolbox installed.

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Torkan
Torkan 2022-4-7
Hmm. Ok so no problem with the code right? Can I install myself? could you pelase let me know how?

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Torkan
2022-4-7

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2022-4-7

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