Basic dataset views: Map of glider tracks, statistics on the depth/time spacing of data, histogram of T and S

[eleanorfrajka]

I've added 3 functions which display information I typically want to know about a dataset. I don't know if it's really a part of glidertest, but

• Map of the glider track (uses Cartopy - I am guessing we should try to minimise the numbers of packages required, so I could rewrite this without Cartopy)
• Histograms of depth/time spacing of the data. This is something that will give the user a Quick Look at whether the dataset have been gridded in some way, and or whether the spacing is fine enough to allow for vertical velocity/spectral work
• Histogram of temperature/salinity. (This requires gsw - I think we will need something to calculate density so this package probably should be added to requirements.)

[review-notebook-app]

Check out this pull request on 

See visual diffs & provide feedback on Jupyter Notebooks.

---

Powered by ReviewNB

[callumrollo]

Test are failing with E ModuleNotFoundError: No module named 'cartopy'

https://github.com/callumrollo/glidertest/actions/runs/11571449685/job/32209350626?pr=39

Should add cartopy and gsw to requirements.txt and requirements-dev.txt