Unit step function in MATLAB - Help!

krow

Joined May 25, 2010
49
Hey guys,

Can anybody help me plot a unit step function in MATLAB? I'm not an experienced programmer and I'm kind of struggling trying to get it right, thanks.

jegues

Joined Sep 13, 2010
733
Hey guys,

Can anybody help me plot a unit step function in MATLAB? I'm not an experienced programmer and I'm kind of struggling trying to get it right, thanks.

Rich (BB code):
function [x]=unitstep(x)

%This is a unit step "function". The vector keeping track of time is the
%input. If time is negative then a zero is returned. If time is zero than
%0.5 is returned. If time is positive then 1 is returned.

if nargin==0 %demo the use of the function if no input is given
x=-10:10;​
end x=x./abs(x); %this performs the same operation as the %matlab "sign" x(isnan(x))=0; x=0.5*(x+1);

krow

Joined May 25, 2010
49

Rich (BB code):
function [x]=unitstep(x)

%This is a unit step "function". The vector keeping track of time is the
%input. If time is negative then a zero is returned. If time is zero than
%0.5 is returned. If time is positive then 1 is returned.

if nargin==0 %demo the use of the function if no input is given
x=-10:10;​
end x=x./abs(x); %this performs the same operation as the %matlab "sign" x(isnan(x))=0; x=0.5*(x+1);
Thanks for the link, I saw it weeks ago though. The problem is I'm not familiar with the 'function' command in MATLAB, I just wanted to have a simple function like u(t-1) so I can shift the function by varying 't', convolute it with another signal, etc.

I will have to read and learn how functions in MATLAB work and then do what I need 