plot2d([t',t'],[csim('step',t,tf2ss(tf))',0*t']) WARNING: csim: Input argument #1 is assumed continuous time.
When I run the above code I get the warning message, but the code runs great. It seems that t is defined OK, what's up?
It is just a warning. Ideally csim() will expect a syslin list (SIMO linear system) in continuous time. If you dont do this, it will assume a continuous time system.