get the value of a signal at spesific time

i have a signal represented by two vectors, time data, and y data. for example

t=[0 2 2 3 3 5 5 6] y=[0 0 1 1 2 2 0 0]

that means, the value of the signal from 0 to 2s is 0, and from 2 to 3s is 1,....

is there any command to return me the value of the signal at any specific time e.g y(1.5s)?

thanks

Answer 1

[Azzi Abdelmalek]

out=y(t==2) % for t=2

[Mahmoud]

and what is y(t==1.5)??????

[Azzi Abdelmalek]

y(max(find(t<=1.5)))

[Mahmoud]

thanks a lot