How can i remove (or hide) the time units ("(seconds)") from the stepplot graphic in the x-axis?

numM=[1.123];

denM=[1 0.1912];

M=tf(numM,denM, 'Outputdelay',0.02);

hfig=figure;

for f=[0.3 0.5 0.7 0.1]

sim("Evaporador_18_03_2023.slx");

plot(t,xP_d,'--','LineWidth',2);

ax = gca;

colororder(["#E68000";"#8040E6";"#000000";"#A2142F"])

hold all

end

for x=[0.3 0.5 0.7 0.1]

opt = stepDataOptions;

opt.StepAmplitude =x;

m=stepplot(M,opt,40);

%setoptions(h,'TimeUnits','hours','Grid','on');

hold all

end

hold off

grid;

title('Comparação....');

xlabel('Tempo (horas)') %i want this label without the "(seconds)" in the end

ylabel('% weight');

legend('xF vs xP(0.3)','xF vs xP(0.5)','xF vs xP(0.7)','xF vs xP(0.1)','M(0.3)','M(0.5)','M(0.7)','M(0.1)');

Answer 1

[Paul]

If you're willing to accept 'hours' in the label instead of 'horas' then set the TimeUnit property of M

numM=[1.123];
denM=[1 0.1912];
M=tf(numM,denM, 'Outputdelay',0.02,'TimeUnit','hours');
opt = stepDataOptions;
opt.StepAmplitude =1;
m=stepplot(M,40,opt);  % had to reverse the arguments
xlabel('Tempo')

If that's not acceptable, it's probably easier to use step() and create your own plot

[y,t] = step(M,40);
plot(t,y);
xlabel('Tempo (horas)')

[Miguel]

Thank you so much! It worked!