MATLAB: Variable change with time interval

MATLABsignalstep function

How can I create a code in matlab that changes the value of a Variable depending on the time interval?
For example different values of X as time progresses:
x=1 for 0<=t<900
x=2 for 900<=t<1800
X=3 for 1800<=t<=2700
X is my variable and t is time.

Best Answer

you can use if/else statements
example:
    if and(t >= 0, t < 900)
        x=1;
    elseif and(t>= 900, t<1800)
        x=2;
    elseif and(t >= 1800, t<= 2700)
        x=3;
    end
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