:bug: `--full-output` errors and damaged PDF

[CoronelBuendia]

Description

When running PROCESS with the --full-output option, the PROCESS optimisation/convergence completes successfully, but an exception occurs while generating the full output plots.

This means that the underlying PROCESS result appears to be valid, but the subsequent full-output generation fails and damages/incompletely generates the PDF.

Reproduction

Run PROCESS with:

process -i <input_file> --full-output

For example, this occurs for the LUCIOLE V1 case:

Plotting mfile /home/matti/code/firefly/studies/v001/config/LUCIOLE_V1_PROCESS.MFILE.DAT

The run itself successfully converges before the plotting stage is reached.

Error

Traceback (most recent call last):
  File "/home/matti/code/PROCESS_PROJECT/PROCESS/env/bin/process", line 8, in <module>
    sys.exit(process_cli())
             ^^^^^^^^^^^^^
  ...
  File "/home/matti/code/PROCESS_PROJECT/PROCESS/process/main.py", line 243, in process_cli
    plot_summary(mfile_path)
  File "/home/matti/code/PROCESS_PROJECT/PROCESS/process/core/io/plot/summary.py", line 17236, in plot_summary
    pages_of_plots = main_plot(
                     ^^^^^^^^^^
  File "/home/matti/code/PROCESS_PROJECT/PROCESS/process/core/io/plot/summary.py", line 16732, in main_plot
    plot_brunner_divertor_power_split_comparison_stackplot(
  File "/home/matti/code/PROCESS_PROJECT/PROCESS/process/core/io/plot/summary.py", line 9159, in plot_brunner_divertor_power_split_comparison_stackplot
    axis.set_xlim([
  File "/home/matti/code/PROCESS_PROJECT/PROCESS/env/lib/python3.12/site-packages/matplotlib/axes/_base.py", line 3828, in set_xlim
    return self.xaxis._set_lim(left, right, emit=emit, auto=auto)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/matti/code/PROCESS_PROJECT/PROCESS/env/lib/python3.12/site-packages/matplotlib/axis.py", line 1216, in _set_lim
    v0 = self.axes._validate_converted_limits(v0, self.convert_units)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/matti/code/PROCESS_PROJECT/PROCESS/env/lib/python3.12/site-packages/matplotlib/axes/_base.py", line 3749, in _validate_converted_limits
    raise ValueError("Axis limits cannot be NaN or Inf")
ValueError: Axis limits cannot be NaN or Inf

Observed behaviour

• PROCESS completes the optimisation successfully and produces a converged result.
• --full-output subsequently starts generating the plots from the MFILE.
• The failure occurs specifically in:
  plot_brunner_divertor_power_split_comparison_stackplot().
• An invalid (NaN or Inf) value is subsequently passed to axis.set_xlim().
• This raises a ValueError and interrupts full-output generation.
• The resulting PDF is therefore incomplete/corrupted rather than containing the complete full output.

Expected behaviour

A successfully converged PROCESS run should not be considered failed because an individual diagnostic/output plot cannot be generated.

Ideally, --full-output should either:

1. successfully generate the complete PDF, or
2. skip the problematic plot with a warning and continue generating the remaining output.

In particular, a plotting failure should not invalidate or obscure an otherwise successfully converged PROCESS result.

Additional consideration

The full-output generation should ideally be robust to individual plots being unavailable for a particular PROCESS configuration. A missing quantity in the MFILE should result in a warning or skipped plot rather than terminating the entire PDF generation process.

Models that error when creating the estimations from various models should return N/A or nan.

Environment

• Python: 3.12
• PROCESS: main
• Command: process --full-output ...