Creating specific vertical matrix

Hello I want to create vertical matrix with one column. The idea is that:

-i need to define how many rows i want (time),

-the matrix will be a rectangle signal that i use in simulink

-the signal goes for example: 20 rows of 0, 50 rows of some value, 10 rows of 0 and so on.

I managed to do this like that

        t= [1:tmax]';
        x1= zeros(99,1);
        x2= -0.0015* ones(600,1);
        x3= zeros(tmax-99-600,1);
        x=vertcat(x1,x2,x3);

But I am sure that the easier way exist, especcially that later I want to use variables to create this matrix and the signal can have unspecified number of states.

Answer 1

[Andrei Bobrov]

t = [100,600];
x = zeros(tmax,1);
x(t(1):(sum(t)-1)) = -.0015;