One way to change freq for map processing

[dulte]

Change Summary

Made it so when ModelMapsEngine is run, main_freq is changed to maps_freq. If maps_freq=coarsest, then the coarsest freq of the given freqs are chosen

Related issue number

Proposed fix to #1260

Checklist

• [ ] Start with a draft-PR
• [ ] The PR title is a good summary of the changes
• [ ] PR is set to AeroTools and a tentative milestone
• [ ] Documentation reflects the changes where applicable
• [ ] Tests for the changes exist where applicable
• [ ] Tests pass locally
• [ ] Tests pass on CI
• [ ] At least 1 reviewer is selected
• [ ] Make PR ready to review

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 79.10448% with 14 lines in your changes missing coverage. Please review.

Project coverage is 78.84%. Comparing base (af3a797) to head (85aee2e). Report is 339 commits behind head on main-dev.

Files with missing lines	Patch %	Lines
pyaerocom/aeroval/modelmaps_engine.py	78.46%	14 Missing :warning:

Additional details and impacted files

@@             Coverage Diff              @@
##           main-dev    #1312      +/-   ##
============================================
- Coverage     78.84%   78.84%   -0.01%     
============================================
  Files           136      136              
  Lines         20790    20856      +66     
============================================
+ Hits          16392    16444      +52     
- Misses         4398     4412      +14     

Flag	Coverage Δ
unittests	78.84% <79.10%> (-0.01%)	:arrow_down:

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[dulte]

Looks good. Only minor changes. I would opt for model_data not modeldata because the former is more readable and modeldata isn't an English word. I like the _get_maps_freq function. We should use that in the overlay maps as well. If you haven't please merge with a recent version of main-dev as well.

Agreed. I've changed the name.

I have merged it in now. The overlay map now uses both _get_maps_freq and the new model reading method. Could you have a look over the new changes? The merging was quite messy, but I think I manged to put everything in the right order