Generate square wave starting from 0

I want to make square wave with function square which starts from 0 and not with amplitude

Answer 1

[Walter Roberson]

[zeroes(1,M), ones(1,N)] repeated as necessary .

[shariq khan]

using function square?

[Walter Roberson]

t = 0:.0001:.0625;
y = 1 - square(2*pi*30*t);
plot(t,y)