fix_229

[d-chambers]

Description

Fixes the issue described in #229.

Checklist

I have (if applicable):

• referenced the GitHub issue this PR closes.
• documented the new feature with docstrings or appropriate doc page.
• included a test. See testing guidelines.
• your name has been added to the contributors page (docs/contributors.md).
• added the "ready_for_review" tag once the PR is ready to be reviewed.

[codecov]

Codecov Report

Merging #234 (084d6c2) into master (e2cc416) will increase coverage by 0.00%.
Report is 1 commits behind head on master.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #234   +/-   ##
=======================================
  Coverage   98.86%   98.86%           
=======================================
  Files          75       75           
  Lines        6068     6076    +8     
=======================================
+ Hits         5999     6007    +8     
  Misses         69       69           

Flag	Coverage Δ
unittests	98.86% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
dascore/core/coords.py	100.00% <100.00%> (ø)
dascore/examples.py	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes