Refactor Dependencies

[wildintellect]

• stac ipyleaflet version: 0.3.6

Description

In order to make stac_ipyleaflet widely compatible with many containerized images, we need to be stricter about not pulling in large dependencies. https://github.com/MAAP-Project/stac_ipyleaflet/blob/main/requirements.txt needs to be revisited to clean up unused library imports.

Example: Xarray and rio_tiler appear to only be used for the commented out sections following https://github.com/MAAP-Project/stac_ipyleaflet/blob/35ded6cc4b49277a6709dd1b130ae3eb111d44f7/stac_ipyleaflet/core.py#L510 If we can avoid Xarray as a dependency that would be good.

An alternative would be to make optional dependencies. Features that are only available if dependencies are installed.

[wildintellect]

@anilnatha until this is solved looks like we should only use stac_ipyleaflet in pangeo based workspaces that already include Xarray.

[emmalu]

My initial thoughts on what can be removed:

• localtileserver, since we opted to use an already-running version of titiler
• requests because any remaining requests calls could be replaced with pystac_client methods
• xarray because the histogram feature it's for is not active at the moment

[anilnatha]

I noticed the project has a requirements.txt file and dependencies are also listed in the setup.cfg file, if these could be consolidated to the setup.cfg it may make it easier to maintain the dependency list.