Error message for tspan in ode45

Hi all;

      While using ode45 with a pre generated time vector taken in a loop, i get the error message :

The entries in tspan must strictly increase or decrease.

Error in ==> ode45 at 173 [neq, tspan, ntspan, next, t0, tfinal, tdir, y0, f0, odeArgs, odeFcn, ...

Any guidance or reference to docs on this error would be helpful.

Thanks, Nani.

[Star Strider]

What values do your vectors for tspan have in your loop?

Answer 1

[Babak]

You get this error when your timespan is incorrectly set up.

Example of incorrect timespan:

 [0 0]
 [0:0.01:10 9]

Correct version:

 [0 10]
 [0:0.01:10]