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

m=80; % The length of the Karnel%

n=0:1:m-1; %Defines Range of position value%

p=n-(m-1)/2; %Angle%

fc=0.1; %Define Cutoff frequency%

Z=sin(2*pi*fc*p)./(pi*p); %Define truncated Sinc

function%

stem(n,Z);grid %To represent the discrete signal value &

draw the grid lines%

title('Unit Sample Response of the sin function') %Define

the title of the figure%

xlabel('n') %Define the label of on x axis%

ylabel('Z') %Define the label of on y axis%

figure; %To draw a figure%

[h,w]=freqz(Z); %get Frequency Response%

plot(w/pi,abs(h));grid

title('Frequency response of the sin function')

xlabel('Frequency')

ylabel('Amplitude')

figure;

s=2*pi*(n/(m-1)); %Angle%

w=0.54-0.46*cos(s); %Define Hamming window function%

stem(n,w);grid

title('Hamming Window')

xlabel('n')

ylabel('w')

figure;

t=Z.*w; %Multiplication of Hamming Window and sin

function%

stem(n,t);grid

title('Multiplication of Hamming Window and sin function')

xlabel('n')

ylabel('t')

figure;

[h,w]=freqz(t);

plot(w/pi,abs(h));grid

xlabel('Frequency')

ylabel('Magnitude')

title('Frequency response of the windowed sin function')

figure;grid

freqz(t)

title('Frequency Response of the windowed sin function in dB')

Answer 1

[Alan Stevens]

You need to turn

Z=sin(2*pi*fc*p)./(pi*p); %Define truncated Sinc 
function% 

into

Z=sin(2*pi*fc*p)./(pi*p); %Define truncated Sinc function

[anas adnan]

thank you so much. But, then it showed another error stated that " Unrecognized function or variable 'draw'. " So, do you know how to solve this?

[Alan Stevens]

Change

stem(n,Z);grid %To represent the discrete signal value & 
draw the grid lines% 

to

stem(n,Z);grid %To represent the discrete signal value & draw the grid lines% 

Make sure any comments follow the % symbol and don't precede them.