Function definitions are not permitted in this context.

help me

Function definitions are not permitted in this context.

[VBBV]

Note also that your function outputs three arguments , code, xq, sqnr which you need to concatenate [ ] , inside the function

Answer 1

[DGM]

OP was running R2014b, so local functions are not allowed in script files.

Answer 2

[VBBV]

Rename the file ok.m to uniform_pcm.m and save file. Type the name of function from command window (giving input arguments) and execute.

[VBBV]

If the first line in your file starts with keyword function , then it's considered as function file.

[Vu]

i have try but i not work

[Vu]

[Vu]

can you help me fix this

[VBBV]

Ok, It seems function starts later in your code. So, you can rename back to whatever name the file previously had. i.e. ok.m

After line 5 i.e.

x = cos(..) + sin(...) % something 

you need to call the function by its name as below

[code,xq,sqnr] = uniform_pcq(x,64)  % not in command window but inside the file 
function [code,xq,sqnr] = uniform_pcq(x,M)
  % your code 
  % your code 
  % ...
end

Then run the file again by green button (run button)

[Vu]

clc ;

clear all;

T=1/20*pi

t=0:T:1;

x = cos(20*pi*t+pi/2) + 3*sin(10*pi*t) + 5*cos(15*pi*t+pi);

function [code,xq,sqnr] = uniform_pcm(x,M)

Nb=log2(M);

Amax =max(abs(x));

delta=2*Amax/(M-1);

Mq=-Amax:delta:Amax;

M1=0:M-1;

xq= zeros (size(x));

xcode = xq;

for k=1:M

ind =find(x > Mq(k) - delta/2 & x<= Mq(k) + delta/2);

xq(ind)= Mq(k);

xcode (ind) = M1(k) ;

end

end

code = de2bi (xcode, Nb, ' left -msb');

[code,xq,sqnr] = uniform_pcm(x,64)

[Vu]

still not work bro

[Vu]

it still have the same error

[VBBV]

clc ;
clear all;
T=1/20*pi

T = 0.1571

t=0:T:1;
x = cos(20*pi*t+pi/2) + 3*sin(10*pi*t) + 5*cos(15*pi*t+pi);
[code,xq] = uniform_pcm(x,64)

code = 7x6

0 0 1 1 0 0 0 0 1 1 1 0 1 0 0 0 1 1 1 1 1 1 1 1 1 0 1 0 0 1 0 0 1 1 1 1 0 0 0 0 0 1

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xq = 1x7

-5.0844 -4.5629 0.9126 8.2132 2.4770 -4.3021 -7.9525

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function [code,xq] = uniform_pcm(x,M)
Nb=log2(M);
Amax =max(abs(x));
delta=2*Amax/(M-1);
Mq=-Amax:delta:Amax;
M1=0:M-1;
xq= zeros (size(x));
xcode = xq;
for k=1:M
    ind =find(x > Mq(k) - delta/2 & x<= Mq(k) + delta/2);
    xq(ind)= Mq(k);
    xcode (ind) = M1(k) ;
end
code = de2bi (xcode, Nb, 'left-msb');

[code,xq.'];
end

% what is sqnr variable ... that is not seen anywhere in your code, yet you
% want it as output ?

[Vu]

oh i am forgot

[Vu]

can you show me the image that you code

[Vu]

i don't know why my code not work

[VBBV]

@Vu

%>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
%  put this code in script file & name it as ok.m (valid filename)
%>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
clc ;
clear all;
T=1/20*pi
t=0:T:1;
x = cos(20*pi*t+pi/2) + 3*sin(10*pi*t) + 5*cos(15*pi*t+pi);
[code,xq] = uniform_pcm(x,64) %  call the function inside ok.m
% ----------------------------------

% >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
% name this file separate as uniform_pcm.m but inside the same folder where
% ok.m is located
% >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
function [code,xq] = uniform_pcm(x,M)
Nb=log2(M);
Amax =max(abs(x));
delta=2*Amax/(M-1);
Mq=-Amax:delta:Amax;
M1=0:M-1;
xq= zeros (size(x));
xcode = xq;
for k=1:M
    ind =find(x > Mq(k) - delta/2 & x<= Mq(k) + delta/2);
    xq(ind)= Mq(k);
    xcode (ind) = M1(k) ;
end
code = de2bi (xcode, Nb, 'left-msb');

[code,xq.'];
end

% what is sqnr variable ... that is not seen anywhere in your code, yet you
% want it as output ?

[VBBV]

@Vu run the above code, ok.m file given in code. Both files ok.m and uniform_pcm.m need to be in same FOLDER. Since you are using R2014b version, the function definitions are not allowed inside script file as error messages tell. Otherwise check with a higher version and run your code.