MATLAB waveform question

[W_Heisenberg]

Hi, I need to make a unit step function , a triangle function, a rectangle function. And plot these by stem.
How can I do that in MatLab?

anyone helps?

 

[hate]

In my limited experience with Matlab, I find concatenating data to form a complex waveform easier then trying to generate all of it in one step. Hope this helps a little.

 

[W_Heisenberg]

the thing is that hard to write any for loop to achieve this...

even for a single step function... this is due to matlab matrix index maybe

 

[hate]

I'm not sure if that code will work or not but worth a try for a step function in the interval (-5, 5).

i= -10: 1:10;
s= (i>= 0);

For the triangle generating a ramp with positive and negative aims and then concatenating them may work.

m= 3; % aim
i= 0: 1: 10;
t1= 3*i;
t2= -3*i;
t=[t1, t2];

For rectangle again concatenating step functions may work. There was also the 'rectpuls' function that was generating some kind of a rectangle signal but not sure how it works.

r= 0;
for i=1: 1: 10
     r= [r s];
end

Again those are what I came up with my limited experience, there must be much better ways to achieve those.