Function definitions are not permitted in this context.
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Function definitions are not permitted in this context.
1 个评论
VBBV
2024-4-24
Note also that your function outputs three arguments , code, xq, sqnr which you need to concatenate [ ] , inside the function
回答（2 个）
DGM
2024-10-10
1 个投票
OP was running R2014b, so local functions are not allowed in script files.
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.
14 个评论
VBBV
2024-4-24
If the first line in your file starts with keyword function , then it's considered as function file.
Vu
2024-4-24
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
2024-4-24
Vu
2024-4-24
Vu
2024-4-24
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)
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
2024-4-24
Vu
2024-4-24
Vu
2024-4-24
VBBV
2024-4-24
%>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
% 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 ?
@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.
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