The code should look like this: output = File("waveEqn.pvd") output << phi while t < T: ... t += dt step += 1 if step % 10 == 0: output << phi On 22 December 2015 at 12:06, Angwenyi David <kipkoej@gmail.com> wrote:

Dear Cotter,

I did so, but got a single file. I thought I could get as many files as timesteps; which files I could open all at once in Paraview to generate a video. Any direction?

Angwenyi

On 22 Dec 2015, at 12:10, Colin Cotter <colin.cotter@imperial.ac.uk> wrote:

del output