[Dask] Dtype not changed on lazy masked integer dtype cubes

[djkirkham]

Cubes with lazy masked integer data will keep their integer dtype when operations are performed on them which should result in a change of dtype (e.g. log). For example:

from numpy import ma
from iris.cube import Cube
from iris.analysis.maths import log
from iris._lazy_data import as_lazy_data

a = ma.masked_array([10,20], [0,1])
la = as_lazy_data(a)
cube = Cube(la, dtype=int)
cube = log(cube)

print cube.dtype
print cube.data

yields:

int64
[2 --]

[djkirkham]

Edit: Actually it's any lazy integer cube, not just masked ones

[djkirkham]

Maybe not...

[pp-mo]

Status: #2570 still open