Plotting the difference between initial values and final solution?

1

Hi,
I have a time dependent differential equation where I am interested in plotting the difference between the initial values and the solution after a given time. Is there an easy way to do this?

Thanks in advance!

2

If the initial solution and the solution at the final time is in the same function space you can create a new function

udiff=Function(V)
udiff.assign(u_end-u_init)

and plot this function using matplotlib or paraview