Pairs plotting dependent on load_results

[steipatr]

plot_pair_wise_scatter only works properly with categorical parameters if the data has been imported with load_results, if the data was generated directly with perform_experiments, you run into some dtype issues. This is because there is a type conversion in load_results

EMAworkbench/ema_workbench/util/utilities.py

Line 68 in 5628cc1

experiments[name] = experiments[name].astype("category")

that is expected/necessary for correctly drawing boxes in plot_pair_wise_scatter.

In a normal EMA workflow, this probably isn't an issue, since normally you would save/load data before analysing it, but when debugging improved plotting functions, it can be a problem :)

Raising this issue for awareness. I know in the TODO there is something mentioned about moving from the whole category business to Enum or NamedTuple, so maybe this can be taken along there.

[steipatr]

This was previously discussed in #72.

[quaquel]

Would be good to address this as part of #232