Error when face node connectivity is not masked

[stephenworsley]

Discussed in #323

Solution proposed by @trexfeathers here #323 (comment)

Add logic to this line of code so that it allows for unmasked arrays:

iris-esmf-regrid/esmf_regrid/experimental/unstructured_regrid.py

Line 104 in d1f1c8f

elemType = self.fnc.count(axis=1)

---

^{Originally posted by thomaswilder December 14, 2023}
I am attempting to regrid data from an orca025 grid to a rectilinear grid so the orca data can be compared with climatology data e.g. EN.4.

I am hoping someone can help me with an error I am receiving when running rg = MeshToGridESMFRegridder(meshcube, target_cube) where the error is

File "/home/users/twilder/Python/ORCA025/regrid_iris/lib/python3.10/site-packages/esmf_regrid/experimental/unstructured_regrid.py", line 104, in _as_esmf_info
    elemType = self.fnc.count(axis=1)
AttributeError: 'numpy.ndarray' object has no attribute 'count'. Did you mean: 'conj'?

The error file is 14520233.err.txt

After following this example on how to create an orca meshcube, I have acquired the following output

sea_water_conservative_temperature / (degC) (-- : 1740494)
    Mesh coordinates:
        latitude                                x
        longitude                               x
    Mesh:
        name                                unknown
        location                            face
    Cell methods:
        0                                   time: mean (thickness weighted)


    Attributes:
        Conventions                         'CF-1.6'

which is similar to the example in the above link.

My target cube takes the form

conservative_temperature / (degC)   (latitude: 173; longitude: 360)
    Dimension coordinates:
        latitude                             x               -
        longitude                            -               x
    Scalar coordinates:
        depth                       0.5057600140571594 m

Could anyone advise why I am receiving this error, and how i might fix it?

Thanks in advance