printing ASCII data to file

[zengbs]

Dear maintainers,
Does r3d2 code support printing ASCII data to file? In my opinion, this feature is very helpful for comparing exact solution and the data obtained from sr-hydro solver. thanks!

[IanHawke]

We don't have this in directly, no. In essence we'd be extracting the code from the _figure_data function in https://github.com/harpolea/r3d2/blob/master/r3d2/riemann_problem.py where the data is temporarily stored in the data variable. Note that the data returned from the function is not the data array - it's been overwritten by the figure data.

For any given wave you can get the data using wave.plotting_data (taking care about the direction of the wave). That could be dumped directly right now, but would require more work.