Improve hy_list_available_hySpc_packages() (part 1)

r-hyperspec / hyperSpec

hyperSpec: Tools for Spectroscopy (R package)

https://r-hyperspec.github.io/hyperSpec/

GNU General Public License v3.0

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Closed GegznaV closed 3 years ago

GegznaV commented 3 years ago

Improve hy_list_available_hySpc_packages():

Update documentation.
Fix typos.
Add a helper function to check if a user has an internet connection (IP address).
In the main function add additional error messages when no IP is found and when download via GitHub API fails.

Related to cbeleites/hyperSpec#328 but is not intended to solve that issue.