SciTools/cartopy

Ensure consistent globe radius (PlateCarree)

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Description

With PROJ 6+ using the new API we see this error with PlateCaree:

Error creating Transformer from CRS.: (Internal Proj Error: proj_create_operations: Source and target ellipsoid do not belong to the same celestial body)

More information about this issue:

Related: #709

This is a blocker for #1140 and #1477

TODO:

Ref: #1252 (comment)

  • Make a new lat/lon projection that takes degrees
  • Add an EquidistantCylindrical projection that works like everything else with regards to globes
  • Deprecate PlateCarree, or at least its current behavior

Closed by #1808