Improve flexibility of map plots

[danielolsen]

Purpose

• Add more flexibility to generate plots with user-defined color ranges. This is useful when comparing two scenarios against each other and trying to highlight the meaningful differences.
• Other improvements to organization/clarity of related code.

What the code is doing

• Adding lmp_min and lmp_max parameters to postreise.plot.plot_lmp_map.map_lmp, with default values equal to the previous hardcoded values.
• Adding vmin and vmax to postreise.plot.plot_utilization_map.map_risk_bind and postreise.plot.plot_utilization_map.map_utilization, with defaults equal to data min/max (same as before)
  • Some simplification of code in map_utilization.
• Moving postreise.plot.plot_carbon_map.get_borders to postreise.plot.projection_helpers.project_borders
  • Also refactoring this function for simplicity/clarity and updating references to this function in other modules.
• Docstrings updates

Testing

Relevant notebooks in postreise/plot/demo run successfully.

Time estimate

15-30 minutes. New features are pretty minimal, the rest of the changes are mostly reorganization.

[jenhagg]

Looks good, much cleaner

[victoriahunt]

Thanks for making these changes! Ran the demo note book changing lmp max and min and it's working well. Top is with defaults (min = 20, max = 40), bottom image is with min = 25, max 35.

[victoriahunt]

Thank you for making these changes to make the code more flexible and cleaner. All looks good.

[rouille]

Are we ever going to modify the above range? if not it could be define in def _get_bus_legend_bars_and_labels and we don't have to propagate it from function to function. Or we could make it a global variable.

[danielolsen]

Good point. Previously, it had been passed to both _construct_bus_data and _construct_shadowprice_visuals (although not used in _construct_bus_data as of the code in develop right now). I will move it as you suggest.

[danielolsen]

Done. Saves us 8 lines too!

[rouille]

Yeah, I felt the linter going faster in the checks