Creation of fuction y=0

[Doug Stewart]

alvaro gonzalez wrote:
> Hi People.
> My problem is I want create in a time-series about variability, 
> up-down above 0 (as y=0 represent to line), but the vector 0 I don't 
> know create!!!. the form that is create to matriz produce error!!!.
> Thanks for all from Chile
> ALvaro Gonzalez
> ------------------------------------------------------------------------

y(1000) =0;

a= rand(1000)-.5;
y=y+a;

Is this what you want?