def _order_cell_methods(cube: Cube) -> None:
"""
Sorts the cell methods on a cube such that if there are multiple methods
they are always written in a consistent order in the output cube. The
input cube is modified.
Args:
cube:
The cube on which the cell methods are to be sorted.
"""
cell_methods = tuple(sorted(cube.cell_methods))
cube.cell_methods = cell_methods
def _discard_redundant_cell_methods(cube: Cube) -> None:
"""
Removes cell method "point": "time" from cube if present.
"""
if not cube.cell_methods:
return
removable_cms = [
CellMethod(method="point", coords="time"),
]
updated_cms = []
for cm in cube.cell_methods:
if cm in removable_cms:
continue
updated_cms.append(cm)
cube.cell_methods = updated_cms
def format_cell_methods_for_diagnostic(cube: Cube) -> None:
"""Remove reference to threshold-type coordinate from cell method comments that
were previously on a probability cube. Modifies cube in place.
Args:
cube:
Cube to update
"""
cell_methods = []
for cell_method in cube.cell_methods:
new_cell_method = iris.coords.CellMethod(
cell_method.method,
coords=cell_method.coord_names,
intervals=cell_method.intervals,
)
cell_methods.append(new_cell_method)
cube.cell_methods = cell_methods
def format_cell_methods_for_probability(cube: Cube, threshold_name: str) -> None:
"""Update cell methods on a diagnostic cube to reflect the fact that the
data to which they now refer is on a coordinate. Modifies cube in place.
Args:
cube:
Cube to update
threshold_name:
Name of the threshold-type coordinate to which the cell
method now refers
"""
cell_methods = []
for cell_method in cube.cell_methods:
new_cell_method = iris.coords.CellMethod(
cell_method.method,
coords=cell_method.coord_names,
intervals=cell_method.intervals,
comments=f"of {threshold_name}",
)
cell_methods.append(new_cell_method)
cube.cell_methods = cell_methods
