Create a step in a graph

Hi all,

I already have a step up. i wish i had one down. how do i change my code?

aux1=70*1200;     
aux2=70.2*1200;    
for k=1:aux1
    v_aux(k)=0.1;  
end
for k=aux1:aux2
    v_aux(k)=v_aux(k-1)+(0.3-0.2)/(360); 
end
for k=aux2:240000
    v_aux(k)=0.31;  
end
for k=1:240000
   v_aux(k)=v_aux(k)+(rand-0.5)*0.01; 
end;    

X2=v_aux';

Thanks in advance

Answer 1

[Sulaymon Eshkabilov]

In this exercise, no need to use a loop to obtain a step fcn. Way1 is using simple matrix operation:

aux1=70*1200;     
aux2=70.2*1200;   
X=0.1*ones(1,aux1);
X(70*1200:70.2*1200) =0.1;
X(70*1200:70.2*1200) = X((70*1200)-1:(70.2*1200)-1)+(0.3-0.2)/(360);
X(aux2:240000) =  0.31;
X(1:240000)=X(1:240000)+(rand(1,240000)-0.5)*0.01;
figure
plot(X)

%%

Way 2 is using heaviside() fcn:

syms x
figure
fplot(0.31*heaviside(x - .31), [0, 2]), shg

[Jórdan Venâncio Leite]

I wanted the same way as my example, if possible.