How to set period (t=0 becomes t=-4)

I'm creating graphs in Matlab for a relative simple equation. I want the value that is the first value in my input matrix to be 'recognized' as belonging to t=-4 and not t=0. Or put differently, I want to 'move' my graph a little to the left relative to the x axis. How do I go about this?

Thank you in advance!

Answer 1

[J. Webster]

might depend on what and how you're plotting. For the simplest case you can just do this...

t = 0:100;
data = somefunction(t);

plot(t-4, data);

[NS]

Thank you! I've attached my .m file for reference, without the additional time commands yet. I'm trying to plot the pi function.

When I use your suggested code, I get an error for the 'plot(t-4, data)' command, saying vectors must be the same length. What would be causing the issue?

Thank you in advance!