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import iris
from iris.tests.stock import realistic_4d
from iris.fileformats.netcdf._dask_locks import get_dask_array_scheduler_type
import dask.array as da
import dask.config

try:
    import distributed
except ImportError:
    distributed = None

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# Example showing how to append ~similar cubes onto an existing netcdf file.
import numpy as np

import iris
from iris.cube import Cube
from iris.coords import DimCoord, AuxCoord

#
# Generate a really simple timestepped data sequence
#

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# Script to make bigger hybrid-height data.
# E.G. "$ python expanded_hybrid_height.py 5"

import datetime
import sys

import numpy as np

import iris
from iris.aux_factory import HybridHeightFactory

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# N.B. currently requires/assumes "dask_timed" feature branch version of Iris (commit 1013ad9)

from functools import wraps

import dask.array as da
import numpy as np
import numpy.ma as ma

from iris.cube import Cube
from iris.coords import DimCoord

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from collections import OrderedDict
import numpy as np
import numpy.ma as ma

def array_difference_stats(array_a, array_b, min_reldiff=1e-20):
    # Calculate different types of array differences and basic stats on them.
    diffs = array_a - array_b
    absdiffs = np.abs(diffs)
    absmags = 0.5*(np.abs(array_a) + np.abs(array_b))
    absmags = np.max(absmags, min_reldiff * np.max(absmags))

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'''
Code for demonstrating Robinson projection problems + fixes
As reported in : https://github.com/SciTools/cartopy/issues/23
Proposed fixes in : https://github.com/SciTools/cartopy/pull/277

'''
import sys

import numpy as np
import cartopy.crs as ccrs