Plotting a signal function

For my class, I have to plot the signal x(t) in matlab. The signal is shown in desmos in the photo below.

[dpb]

That would be a use for stairs

Answer 1

[Sulaymon Eshkabilov]

This can be also solved using griddedInterPolant(), e.g.:

% Solution # 1.
Y  =   [0    1  1  2  2  -1  -1  0 ];   % y data
X =    [-2  -2 0  0  1   1   2  2 ];    % x data 
% To assign an individual line color for each pair of data interval
figure(1)
for ii=1:numel(X)-1
plot(X(ii:ii+1), Y(ii:ii+1), '-', 'LineWidth',2)
hold all
end
grid minor
xlabel('$x$', 'Interpreter','latex')
ylabel('$y$', 'Interpreter','latex')

%% Solution 2.
Y  =   [0    1  1  2  2  -1  -1  0 ];   % y data
X =    [-2  -2 0  0  1   1   2  2 ];    % x data 
figure(2)
plot(X, Y, '-', 'LineWidth',2)
grid minor
xlabel('$x$', 'Interpreter','latex')
ylabel('$y$', 'Interpreter','latex')