The stem plot is not shown in the figure

The stem plot is not showing although the code should be correct,

Can you help me to figure what is the mistake I have made?

This is the script code:

%% CT signal

t = 0:0.01:2; % sample points from 0 to 2 in steps of 0.01

xt = sin(2*pi*t); % Evaluate sin(2 pi t)

subplot(2,1,1); % Two rows, one column, first plot

plot(t,xt,'b'); % Create plot with blue line

% Label axis

xlabel('t in sec');

ylabel('x(t)');

title('Plot of sin(2\pi t)'); % Title plot

%% DT signal

n = 0:1:40; % sample index from 0 to 40

xn = sin(0.1*pi*n); % Evaluate sin(0.1 pi n)

subplot(2,1,2); % Two rows, one column, second plot

Hs = stem(n,xn,'r','filled','marker size',4); % Stem-plot

% Label axis

xlabel('n');

ylabel('x(n)'); % Label axis

title('Stem Plot of sin(0.1\pi n)'); % Title plot

Answer 1

[VBBV]

t = 0:0.01:2; % sample points from 0 to 2 in steps of 0.01  
xt = sin(2*pi*t); % Evaluate sin(2 pi t) 
subplot(2,1,1); % Two rows, one column, first plot  
plot(t,xt,'b'); % Create plot with blue line
% Label axis 
xlabel('t in sec'); 
ylabel('x(t)'); 
title('Plot of sin(2\pi t)'); % Title plot
%% DT signal
n = 0:1:40; % sample index from 0 to 40 
xn = sin(0.1*pi*n); % Evaluate sin(0.1 pi n) 
subplot(2,1,2); % Two rows, one column, second plot 
Hs = stem(n,xn,'r','filled','markersize',8); % delete the space betweeen words
% Label axis 
xlabel('n');  
ylabel('x(n)'); % Label axis 
title('Stem Plot of sin(0.1\pi n)'); % Title plot

[VBBV]

delete the space betweeen words marker and size in the function

[Badr Al-Sabri]

Thank you so much

Answer 2

[cr]

I don't think there is markersize attribute in stem(). Either do

stem(n,xn)

or replace stem() with plot()