Error 'Function definition not supported in this context. Create functions in code file.'

24 vues (au cours des 30 derniers jours)
Trying to do : function nrm = fournorm(x) for a question
But it comes up with Error: Function definition not supported in this context. Create functions in code file.
  5 commentaires
Mhahida Baksh
Mhahida Baksh le 23 Avr 2020
Im trying to solve a maths question and this is what it tells me to do as the first step:
function nrm = fournorm(x) % find the four-norm of the vector x
Stephen23
Stephen23 le 23 Avr 2020
"...this is what it tells me to do as the first step:"
You need to write that code in a file and save the file using the same name as the function, i.e. fournorm.m.
In MATLAB it is not possible to define functions like that in the command window.

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Réponses (2)

Srivardhan Gadila
Srivardhan Gadila le 29 Avr 2020
You have to create functions in files, refer to Create Functions in Files, Add Functions to Scripts & Functions.
If you have simpler functions like
function y = cubicPoly(x)
y = x.^3 + x.^2 + x + 1;
end
then you can make use of function_handle and define such functions in command window itself or in a script as follows:
f = @(x) x.^3 + x.^2 + x + 1;
  1 commentaire
Steven Lord
Steven Lord le 16 Mai 2021
To be clearer, you cannot define a function simply by copying and pasting the code starting with the function keyword at the prompt in the MATLAB Command Window. The function keyword is only allowed inside a script, function, or class file.

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Mubbara Muhammad Saleem Sheikh
Modifié(e) : Rik le 7 Oct 2021
function move=tictac(n). %first computer move in tic-tac-toe. %go for the centre if empty. %otherwise choose the upper left corner. if n=5 move=5; else move=1 end
(Can anyone help me with this.can u tell me why matlab software shows Error: Function definition are not
supported in this context. Functions
can only be created as local or nested
functions in code files.
  5 commentaires
Mubbara Muhammad Saleem Sheikh
Yeah i write function in file "tictac.mm" like this. This is code file
Mubbara Muhammad Saleem Sheikh
After this , where we apply function write any value of functions u will get value

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