Mesh tests (#4034)

* add ugrid mesh-api stubs (#4001)

* add additional mesh stubs (#4005)

* Update mesh-data-model branch (#4009) (#4011)

* Add abstract cube summary (#3987)

Co-authored-by: stephen.worsley <[email protected]>

* add nox session conda list (#3990)

* Added text to state the Python version used to build the docs. (#3989)

* Added text to state the Python version used to build the docs.

* Added footer template that includes the Python version used to build.

* added new line

* Review actions

* added whatsnew

* Iris py38 (#3976)

* support for py38

* update CI and noxfile

* enforce alphabetical xml element attribute order

* full tests for py38 + fix docs-tests

* add whatsnew entry

* update doc-strings + review actions

* Alternate xml handling routine (#29)

* all xml tests pass for nox tests-3.8

* restored docstrings

* move sort_xml_attrs

* make sort_xml_attrs a classmethod

* update sort_xml_attr doc-string

Co-authored-by: Bill Little <[email protected]>

* add jamesp to whatsnew + minor tweak

Co-authored-by: James Penn <[email protected]>

* normalise version to implicit development release number (#3991)

* Gallery: update COP maps example  (#3934)

* update cop maps example

* comment tweaks

* minor comment tweak + whatsnew

* reinstate whatsnew addition

* remove duplicate whatsnew

* don't support mpl v1.2 (#3941)

* Cubesummary tidy (#3988)

* Extra tests; fix for array attributes.

* Docstring for CubeSummary, and remove some unused parts.

* Fix section name capitalisation, in line with existing cube summary.

* Handle array differences; quote strings in extras and if 'awkward'-printing.

* Ensure scalar string coord 'content' prints on one line.

* update intersphinx mapping and matplotlib urls (#4003)

* update intersphinx mapping and matplotlib urls

* use matplotlib intersphinx where possible

* review actions

* review actions

* update readme badges (#4004)

* update readme badges

* pimp twitter badge

* update readme logo img src and href (#4006)

* update setuptools description (#4008)

Co-authored-by: Patrick Peglar <[email protected]>
Co-authored-by: stephen.worsley <[email protected]>
Co-authored-by: tkknight <[email protected]>
Co-authored-by: James Penn <[email protected]>
Co-authored-by: Ruth Comer <[email protected]>

Co-authored-by: Patrick Peglar <[email protected]>
Co-authored-by: stephen.worsley <[email protected]>
Co-authored-by: tkknight <[email protected]>
Co-authored-by: James Penn <[email protected]>
Co-authored-by: Ruth Comer <[email protected]>

* MeshMetadata class. (#4002)

* MeshMetadata class.

* MeshMetadata extra members for dim names.

* Comment for BaseMetadata refactoring.

* add meshmetadata services (#4012)

* Mesh api coord manager (#4015)

* add mesh coordinate manager

* wip

* make shape methods private + reorganise method order

* review actions

* partial mesh

* wip

* Mesh data model to ng vat mesh api (#4023)

* Update mesh-data-model branch (#4009)

* Add abstract cube summary (#3987)

Co-authored-by: stephen.worsley <[email protected]>

* add nox session conda list (#3990)

* Added text to state the Python version used to build the docs. (#3989)

* Added text to state the Python version used to build the docs.

* Added footer template that includes the Python version used to build.

* added new line

* Review actions

* added whatsnew

* Iris py38 (#3976)

* support for py38

* update CI and noxfile

* enforce alphabetical xml element attribute order

* full tests for py38 + fix docs-tests

* add whatsnew entry

* update doc-strings + review actions

* Alternate xml handling routine (#29)

* all xml tests pass for nox tests-3.8

* restored docstrings

* move sort_xml_attrs

* make sort_xml_attrs a classmethod

* update sort_xml_attr doc-string

Co-authored-by: Bill Little <[email protected]>

* add jamesp to whatsnew + minor tweak

Co-authored-by: James Penn <[email protected]>

* normalise version to implicit development release number (#3991)

* Gallery: update COP maps example  (#3934)

* update cop maps example

* comment tweaks

* minor comment tweak + whatsnew

* reinstate whatsnew addition

* remove duplicate whatsnew

* don't support mpl v1.2 (#3941)

* Cubesummary tidy (#3988)

* Extra tests; fix for array attributes.

* Docstring for CubeSummary, and remove some unused parts.

* Fix section name capitalisation, in line with existing cube summary.

* Handle array differences; quote strings in extras and if 'awkward'-printing.

* Ensure scalar string coord 'content' prints on one line.

* update intersphinx mapping and matplotlib urls (#4003)

* update intersphinx mapping and matplotlib urls

* use matplotlib intersphinx where possible

* review actions

* review actions

* update readme badges (#4004)

* update readme badges

* pimp twitter badge

* update readme logo img src and href (#4006)

* update setuptools description (#4008)

Co-authored-by: Patrick Peglar <[email protected]>
Co-authored-by: stephen.worsley <[email protected]>
Co-authored-by: tkknight <[email protected]>
Co-authored-by: James Penn <[email protected]>
Co-authored-by: Ruth Comer <[email protected]>

* Master to mesh data model (#4022)

* Add abstract cube summary (#3987)

Co-authored-by: stephen.worsley <[email protected]>

* add nox session conda list (#3990)

* Added text to state the Python version used to build the docs. (#3989)

* Added text to state the Python version used to build the docs.

* Added footer template that includes the Python version used to build.

* added new line

* Review actions

* added whatsnew

* Iris py38 (#3976)

* support for py38

* update CI and noxfile

* enforce alphabetical xml element attribute order

* full tests for py38 + fix docs-tests

* add whatsnew entry

* update doc-strings + review actions

* Alternate xml handling routine (#29)

* all xml tests pass for nox tests-3.8

* restored docstrings

* move sort_xml_attrs

* make sort_xml_attrs a classmethod

* update sort_xml_attr doc-string

Co-authored-by: Bill Little <[email protected]>

* add jamesp to whatsnew + minor tweak

Co-authored-by: James Penn <[email protected]>

* normalise version to implicit development release number (#3991)

* Gallery: update COP maps example  (#3934)

* update cop maps example

* comment tweaks

* minor comment tweak + whatsnew

* reinstate whatsnew addition

* remove duplicate whatsnew

* don't support mpl v1.2 (#3941)

* Cubesummary tidy (#3988)

* Extra tests; fix for array attributes.

* Docstring for CubeSummary, and remove some unused parts.

* Fix section name capitalisation, in line with existing cube summary.

* Handle array differences; quote strings in extras and if 'awkward'-printing.

* Ensure scalar string coord 'content' prints on one line.

* update intersphinx mapping and matplotlib urls (#4003)

* update intersphinx mapping and matplotlib urls

* use matplotlib intersphinx where possible

* review actions

* review actions

* update readme badges (#4004)

* update readme badges

* pimp twitter badge

* update readme logo img src and href (#4006)

* update setuptools description (#4008)

* cirrus-ci compute credits (#4007)

* update release process (#4010)

* Stop using deprecated aliases of builtin types (#3997)

* Stopped using deprecated aliases of builtin types.
This is required to avoid warnings starting with NumPy 1.20.0.

* Update lib/iris/tests/test_cell.py

Co-authored-by: Bill Little <[email protected]>

* Update lib/iris/tests/test_cell.py

Co-authored-by: Bill Little <[email protected]>

* Updated whatsnew.

Co-authored-by: Bill Little <[email protected]>

* celebrate first time iris contributors (#4013)

* Docs unreleased banner (#3999)

* baseline

* removed debug comments

* reverted

* remove line

* Testing

* testing extensions

* testing rtd_version

* fixed if

* removed line

* tidy up

* tidy comments

* debug of pre-existing rtd variables

* added reminder

* testing

* testing still

* updated comments

* added whatsnew

* expanded the if conditiion

* review actions

* Update layout.html

Remove alternative banner that used the RestructuredText notation.

* review actions

* drop __unicode__ method usage (#4018)

* cirrus-ci conditional tasks (#4019)

* cirrus-ci conditional tasks

* use bc for bash arithmetic

* revert back to sed

* use expr

* reword

* minor documentation changes

* review actions

* make iris.common.metadata._hexdigest public (#4020)

Co-authored-by: Patrick Peglar <[email protected]>
Co-authored-by: stephen.worsley <[email protected]>
Co-authored-by: tkknight <[email protected]>
Co-authored-by: James Penn <[email protected]>
Co-authored-by: Ruth Comer <[email protected]>
Co-authored-by: Alexander Kuhn-Regnier <[email protected]>

Co-authored-by: Patrick Peglar <[email protected]>
Co-authored-by: stephen.worsley <[email protected]>
Co-authored-by: tkknight <[email protected]>
Co-authored-by: James Penn <[email protected]>
Co-authored-by: Ruth Comer <[email protected]>
Co-authored-by: Alexander Kuhn-Regnier <[email protected]>

* Connectivity manager (#4017)

* ConnectivityManager first pass.

* ConnectivityManager align with proposed CoordManager.

* Connectivity Manager review actions.

* Connectivity Manager more review changes.

* Use metadata_manager for Mesh location dimension.

* Mesh dimension name abstraction.

* Align Cooord and Connectivity Managers filters methods.

* Completed Mesh class.

* filter_cf improvements.

* Moved filter_cf.

* Mesh connectivity manager namedtuples comment.

* Mesh removed trailing underscores.

* Mesh _set_dimension_names improvements.

* Mesh import rationalisation.

* Mesh connectivity manager remove NDIM.

* Connectivity manager use lazy indices_by_src().

* Connectivity manager clearer removal syntax.

* Connectivity manager don't override __init__.

* Connectivity manager correct base class syntax.

* Metadata filter hexdigest reference fix.

* test_MeshMetadata fix.

* Rename filter to metadata_filter.

* minor fixes (#4025)

* minor fixes

* wip

* add mesh pickle support (#4026)

* Test Mesh WIP.

* Mesh face_dimension not set for topology_dimension=1.

* Mesh testing WIP.

* Mesh tests WIP.

* Mesh tests WIP.

* Mesh tests complete.

* Mesh repr tests.

* experimental.ugrid restore class ordering.

* Mesh tests - move global and class variables into setUpClass methods, to play nicely with unittest.

* Delete commented code.

* Mesh clearer distinction between coords and connectivities filters.

* Mesh tests slight readability improvement.

Co-authored-by: Bill Little <[email protected]>
Co-authored-by: Patrick Peglar <[email protected]>
Co-authored-by: stephen.worsley <[email protected]>
Co-authored-by: tkknight <[email protected]>
Co-authored-by: James Penn <[email protected]>
Co-authored-by: Ruth Comer <[email protected]>
Co-authored-by: Alexander Kuhn-Regnier <[email protected]>