Unclear how to generate plots

[shredEngineer]

After the modifications done in #18, I have finally managed to run each of the Maxwell examples and getting the _output/ directories populated with files claw_aux.ptc0000, claw_aux.ptc0000.info, claw.pkl0000, claw.ptc0000, claw.ptc0000.info, etc.

However, at the moment, it is totally unclear to me how to generate plots from this data.

I do understand that there exists a module emclaw/utils/visualization.py.

After some minor changes to this module, I was able to run it and have it read the files in the _output/ directory (tested with the Maxwell 2D example). I did this by appending to following snippet to the end of the example code:

import os
os.system("python ../../emclaw/utils/visualization.py /home/$USER/emclaw/examples/maxwell_vc_2d/_output")

This generated the following console output:

{}
0
(16384, 3)
./_output/claw.ptc0000
(16384, 6)
./_output/claw_aux.ptc0000
1
(16384, 3)
./_output/claw.ptc0001
2
(16384, 3)
./_output/claw.ptc0002
3
(16384, 3)
./_output/claw.ptc0003
4
(16384, 3)
./_output/claw.ptc0004
5
(16384, 3)
./_output/claw.ptc0005
6
(16384, 3)
./_output/claw.ptc0006
7
(16384, 3)
./_output/claw.ptc0007
8
(16384, 3)
./_output/claw.ptc0008
9
(16384, 3)
./_output/claw.ptc0009
10
(16384, 3)
./_output/claw.ptc0010
aux_rage = range(0, 6)
aux_range = [0, 1, 2]
build_grid_vecs = <bound method toolbox.build_grid_vecs of <visualization.toolbox object at 0x7f1ecb45feb0>>
data_zero = {'t': 0.0, 'num_eqn': 3, 'nstates': 1, 'num_aux': 6, 'num_dim': 2, 'write_aux': True, 'problem_data': {'chi2': array([0., 0., 0.]), 'chi3': array([0., 0., 0.]), 'vac1': 1.0, 'vac2': 1.0, 'vac3': 1.0, 'co': 1.0, 'zo': 1.0, 'dx': 0.390625, 'dy': 0.390625, 'nl': False, 'psi': True}, 'mapc2p': <function identity_map_2d at 0x7f1eba588790>, 'file_format': 'binary', 'level': 1, 'names': ['x', 'y'], 'lower': [0.0, 0.0], 'num_cells': [128, 128], 'delta': [0.390625, 0.390625]}
delta = [0.390625 0.390625]
dump = <bound method toolbox.dump of <visualization.toolbox object at 0x7f1ecb45feb0>>
expand_2d = False
file_format = petsc
frame_range = range(0, 11)
get_info = <bound method toolbox.get_info of <visualization.toolbox object at 0x7f1ecb45feb0>>
grid = {}
lower = [0.0, 0.0]
mpi_split = True
names = ['x', 'y']
num_aux = 6
num_cells = [128, 128]
num_dim = 2
num_eqn = 3
num_frames = 11
num_mp = None
outdir = ./_output
p_range = None
ptc_read = <bound method toolbox.ptc_read of <visualization.toolbox object at 0x7f1ecb45feb0>>
ptc_split = <bound method toolbox.ptc_split of <visualization.toolbox object at 0x7f1ecb45feb0>>
q_range = [0, 1, 2]
read_aux = True
read_p = <bound method toolbox.read_p of <visualization.toolbox object at 0x7f1ecb45feb0>>
s_range = range(0, 2)
sampling = 1
set_dir = <bound method toolbox.set_dir of <visualization.toolbox object at 0x7f1ecb45feb0>>
split_solution = <bound method toolbox.split_solution of <visualization.toolbox object at 0x7f1ecb45feb0>>
update_aux = False
write_aux = False
write_split = <bound method toolbox.write_split of <visualization.toolbox object at 0x7f1ecb45feb0>>
xmf_base = claw.meta

The following files were added to the _output/ directory: n00.sol_aux0000, n00.sol_aux0000.info, s00.sol0000, s00.sol0000.info etc.

So, before attempting to fix anything further, I need to know the intended procedure or workflow for generating plots from the _output/ files.