Add function to plot emission loci

[dstansby]

No description provided.

[codecov-commenter]

Codecov Report

Base: 71.86% // Head: 68.69% // Decreases project coverage by -3.16% ⚠️

Coverage data is based on head (f836ffa) compared to base (3eadd93).
Patch coverage: 38.09% of modified lines in pull request are covered.

❗ Current head f836ffa differs from pull request most recent head f28dd4e. Consider uploading reports for the commit f28dd4e to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #23      +/-   ##
==========================================
- Coverage   71.86%   68.69%   -3.17%     
==========================================
  Files           7        7              
  Lines         231      246      +15     
==========================================
+ Hits          166      169       +3     
- Misses         65       77      +12     

Impacted Files	Coverage Δ
src/demcmc/mcmc.py	32.43% <0.00%> (ø)
src/demcmc/emission.py	72.34% <40.00%> (-9.94%)	⬇️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.