AttributeError from import of iceflow ui: NASAGIBS.BlueMarble no longer listed in xyzservices

[andypbarrett]

What Happened

The 0_introduction.ipynb notebook raises an AttributeError in the first cell when trying to import iceflow.ui. This appears to result from a call to ipyleaflet.basemaps.NASAGIBS.BlueMarble.

Investigation

Looking at https://xyzservices.readthedocs.io/en/stable/introduction.html under NASAGIBS services, it appears that there is no longer an entry for BlueMarble. BlueMarble is also not shown in https://xyzservices.readthedocs.io/en/stable/gallery.html.

---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
File [~/mambaforge/envs/nsidc-iceflow/lib/python3.9/site-packages/xyzservices/lib.py:44](http://localhost:8889/home/apbarret/mambaforge/envs/nsidc-iceflow/lib/python3.9/site-packages/xyzservices/lib.py#line=43), in Bunch.__getattr__(self, key)
     43 try:
---> 44     return self.__getitem__(key)
     45 except KeyError as err:

KeyError: 'BlueMarble'

The above exception was the direct cause of the following exception:

AttributeError                            Traceback (most recent call last)
Cell In[1], line 2
      1 # Importing IceFlow client library
----> 2 from iceflow.ui import IceFlowUI
      3 from iceflow.client import IceflowClient
      5 import earthaccess

File [~/src/NSIDC-Data-Tutorials/notebooks/iceflow/iceflow/ui.py:9](http://localhost:8889/lab/tree/iceflow/ui.py#line=8)
      6 from IPython.display import display, HTML
      7 from ipyleaflet import (Map, SearchControl, AwesomeIcon, GeoJSON,
      8                         Marker, DrawControl, LayersControl)
----> 9 from .layers import custom_layers, flight_layers, widget_projections
     10 from .client import IceflowClient
     13 class IceFlowUI:

File [~/src/NSIDC-Data-Tutorials/notebooks/iceflow/iceflow/layers.py:106](http://localhost:8889/lab/tree/iceflow/layers.py#line=105)
     64 north_3413 = {
     65     'name': 'EPSG:3413',
     66     'custom': True,
   (...)
     81     ]
     82 }
     84 south_3031 = {
     85     'name': 'EPSG:3031',
     86     'custom': True,
   (...)
    101     ]
    102 }
    104 widget_projections = {
    105     'global': {
--> 106         'base_map': basemaps.NASAGIBS.BlueMarble,
    107         'projection': projections.EPSG3857,
    108         'center': (30, -30),
    109         'zoom': 2,
    110         'max_zoom': 8
    111     },
    112     'north': {
    113         'base_map': basemaps.NASAGIBS.BlueMarble3413,
    114         'projection': north_3413,
    115         'center': (80, -50),
    116         'zoom': 1,
    117         'max_zoom': 4
    118     },
    119     'south': {
    120         'base_map': basemaps.NASAGIBS.BlueMarble3031,
    121         'projection': south_3031,
    122         'center': (-90, 0),
    123         'zoom': 1,
    124         'max_zoom': 4
    125     }
    126 }

File [~/mambaforge/envs/nsidc-iceflow/lib/python3.9/site-packages/xyzservices/lib.py:46](http://localhost:8889/home/apbarret/mambaforge/envs/nsidc-iceflow/lib/python3.9/site-packages/xyzservices/lib.py#line=45), in Bunch.__getattr__(self, key)
     44     return self.__getitem__(key)
     45 except KeyError as err:
---> 46     raise AttributeError(key) from err

AttributeError: BlueMarble

[andypbarrett]

Commenting out 'global': {...} allows the import to succeed.

[betolink]

I think this is related to what @asteiker mentioned, the GIBS service renamed some grids and we have to change them here.