def test_add_cell_metrics():
path = tempfile.mkdtemp()
store = zarr.DirectoryStore(path)
root = zarr.group(store, overwrite=True)
test_data_location = "test/data/"
test_metrics_file = test_data_location + "merged-cell-metrics.csv.gz"
test_emptydrops_file = test_data_location + "empty_drops_result.csv"
metrics_df = pd.read_csv(test_metrics_file, dtype=str)
metrics_df = metrics_df.rename(columns={"Unnamed: 0": "cell_id"})
sample_cell_ids = metrics_df['cell_id'][0:10]
target_test_code.add_cell_metrics(data_group=root,
metrics_file=test_metrics_file,
cell_ids=sample_cell_ids,
emptydrops_file=test_emptydrops_file,
verbose=True)
# Read the results back
store_read = zarr.open(zarr.DirectoryStore(path))
cell_metadata_float = store_read['cell_metadata_float'][:]
cell_metadata_float_name = store_read['cell_metadata_float_name'][:]
cell_metadata_bool = store_read['cell_metadata_bool'][:]
cell_metadata_bool_name = store_read['cell_metadata_bool_name'][:]
assert cell_metadata_float.shape == (10, 13)
assert cell_metadata_float_name.shape == (13, )
assert cell_metadata_bool.shape == (10, 2)
assert cell_metadata_bool_name.shape == (2, )
def random_v_random_capture(platform, key_len=16, N=10000):
#may not be working
scope,target = setup_device(platform)
ktp = FixedVRandomText(key_len)
store = zarr.DirectoryStore('data/{}-{}-{}.zarr'.format(platform,N,key_len))
root = zarr.group(store=store, overwrite=True)
zwaves = root.zeros('traces/waves', shape=(2*N, scope.adc.samples), chunks=(2500, None), dtype='float64')
ztextins = root.zeros('traces/textins', shape=(2*N, 16), chunks=(2500, None), dtype='uint8')
waves = zwaves[:,:]
textins = ztextins[:,:]
for i in trange(2*N):
key, text = ktp.next_group_B()
trace = cw.capture_trace(scope, target, text, key)
while trace is None:
trace = cw.capture_trace(scope, target, text, key)
if not verify_AES(text, key, trace.textout):
raise ValueError("Encryption failed")
#project.traces.append(trace)
waves[i, :] = trace.wave
textins[i, :] = np.array(text)
zwaves[:,:] = waves[:,:]
ztextins[:,:] = textins[:,:]
print("Last encryption took {} samples".format(scope.adc.trig_count))
def netcdf_to_zarr(src, dst, axis=None, mode='serial', nested=False):
"""Summary
Args:
src (TYPE): Description
dst (TYPE): Description
axis (None, optional): Description
mode (str, optional): Description
nested (bool, optional): Description
"""
if isinstance(dst, str):
if nested:
local_store = zarr.NestedDirectoryStore(dst)
else:
local_store = zarr.DirectoryStore(dst)
else:
local_store = dst
root = zarr.group(store=local_store, overwrite=True)
for i, dname in enumerate(src):
# cycling over groups, the first one is the root.
for j, gname in enumerate(__get_groups(dname)):
if j == 0:
group = root
ds = ''
else:
group = __set_group(gname, root)
ds = dname
if i == 0:
__set_meta(ds + gname, group)
__set_vars(ds + gname, group, mode)
else:
__append_vars(gname, group, axis, mode)
def load(cls, path: PathType):
"""Load existing DirectoryStore."""
zarr_store = zarr.DirectoryStore(path)
group = zarr.group(store=zarr_store)
xshape = cls._extract_xshape_from_zarr_group(group)
zdim = cls._extract_zdim_from_zarr_group(group)
return DirectoryStore(zdim=zdim, xshape=xshape, path=path)
def init_zarr(sample_id, path, file_format, schema_version):
"""Initializes the zarr output.
Args:
sample_id (str): sample or cell id
path (str): path to the zarr output
file_format (str): zarr file format [DirectoryStore, ZipStore]
schema_version (str): version string of this output to allow for parsing of future changes
Returns:
root (zarr.hierarchy.Group): initialized zarr group
"""
store = None
if file_format == "DirectoryStore":
store = zarr.DirectoryStore(path)
if file_format == "ZipStore":
store = zarr.ZipStore(path, mode='w')
# create the root group
root = zarr.group(store, overwrite=True)
#root.attrs['README'] = "The schema adopted in this zarr store may undergo changes in the future"
root.attrs['sample_id'] = sample_id
root.attrs['optimus_output_schema_version'] = schema_version
# Create the expression_matrix group
#root.create_group("expression_matrix", overwrite=True);
return root
def open(self, mode: str = "r", cached: bool = True, cache_size_bytes: int = int(1e9)) -> "ChunkedDataset":
"""Opens a zarr dataset from disk from the path supplied in the constructor.
Keyword Arguments:
mode (str): Mode to open dataset in, default to read-only (default: {"r"})
cached (bool): Whether to cache files read from disk using a LRU cache. (default: {True})
cache_size_bytes (int): Size of cache in bytes (default: {1e9} (1GB))
Raises:
Exception: When any of the expected arrays (frames, agents, scenes) is missing or the store couldn't be
opened.
"""
if cached:
self.root = zarr.open_group(
store=zarr.LRUStoreCache(zarr.DirectoryStore(self.path), max_size=cache_size_bytes), mode=mode
)
else:
self.root = zarr.open_group(self.path, mode=mode)
self.frames = self.root[FRAME_ARRAY_KEY]
self.agents = self.root[AGENT_ARRAY_KEY]
self.scenes = self.root[SCENE_ARRAY_KEY]
try:
self.tl_faces = self.root[TL_FACE_ARRAY_KEY]
except KeyError:
warnings.warn(
f"{TL_FACE_ARRAY_KEY} not found in {self.path}! Traffic lights will be disabled",
RuntimeWarning,
stacklevel=2,
)
self.tl_faces = np.empty((0,), dtype=TL_FACE_DTYPE)
return self
def main(cfg):
dat = HubmapDataset(cfg["data_dir"], cfg["out_dir"])
store = zarr.DirectoryStore(dat.path.out / "zarr" / cfg["version"] /
f"db.zarr")
database = zarr.group(store=store, overwrite=False)
for id_, _ in tqdm(list(dat.get_inf("train").iterrows())):
database.create_group(id_)
img = dat.get_img(id_)
msk = dat.get_msk(id_, "target")
shape = dat.get_shape(id_)
rescale = A.Resize(height=int(shape[0] / cfg["scale"]),
width=int(shape[1] / cfg["scale"]),
p=1.0)
transformed = rescale(image=img, mask=msk)
img, msk = transformed["image"], transformed["mask"]
del transformed
gc.collect()
database[id_]["img"] = zarr.array(img,
chunks=(cfg["chunk_size"],
cfg["chunk_size"], 3))
database[id_]["target"] = zarr.array(msk,
chunks=(cfg["chunk_size"],
cfg["chunk_size"]))
del img, msk
gc.collect()
def open(
self,
mode: str = "r",
cached: bool = True,
cache_size_bytes: int = int(1e9)) -> "ChunkedDataset":
"""Opens a zarr dataset from disk from the path supplied in the constructor.
:param mode: Mode to open dataset in, default to read-only (default: {"r"})
:param cached: Whether to cache files read from disk using a LRU cache. (default: {True})
:param cache_size_bytes: Size of cache in bytes (default: {1e9} (1GB))
"""
if cached:
self.root = zarr.open_group(store=zarr.LRUStoreCache(
zarr.DirectoryStore(self.path), max_size=cache_size_bytes),
mode=mode)
else:
self.root = zarr.open_group(self.path, mode=mode)
self.frames = self.root[FRAME_ARRAY_KEY]
self.agents = self.root[AGENT_ARRAY_KEY]
self.scenes = self.root[SCENE_ARRAY_KEY]
try:
self.tl_faces = self.root[TL_FACE_ARRAY_KEY]
except KeyError:
# the real issue here is that frame doesn't have traffic_light_faces_index_interval
warnings.warn(
f"{TL_FACE_ARRAY_KEY} not found in {self.path}! "
f"You won't be able to use this zarr into an Ego/AgentDataset",
RuntimeWarning,
stacklevel=2,
)
self.tl_faces = np.empty((0, ), dtype=TL_FACE_DTYPE)
return self
def prepare_zarr_group(dataset_id, dataset, store, table="MAIN"):
dir_store = zarr.DirectoryStore(store)
try:
# Open in read/write, must exist
group = zarr.open_group(store=dir_store, mode="r+")
except zarr.errors.GroupNotFoundError:
# Create, must not exist
group = zarr.open_group(store=dir_store, mode="w-")
group_name = f"{table}_{dataset_id}"
ds_group = group.require_group(table).require_group(group_name)
schema = DatasetSchema.from_dataset(dataset)
for column, column_schema in schema.data_vars.items():
create_array(ds_group, column, column_schema, False)
for column, column_schema in schema.coords.items():
create_array(ds_group, column, column_schema, True)
ds_group.attrs.update({
**schema.attrs, DASKMS_ATTR_KEY: {
"chunks": dict(dataset.chunks)
}
})
return ds_group
def init_zarr(sample_id, path, file_format):
"""Initializes the zarr output.
Args:
sample_id (str): sample or cell id
path (str): path to the zarr output
file_format (str): zarr file format [DirectoryStore, ZipStore]
Returns:
root (zarr.hierarchy.Group): initialized zarr group
"""
store = None
if file_format == "DirectoryStore":
store = zarr.DirectoryStore(path)
if file_format == "ZipStore":
store = zarr.ZipStore(path, mode='w')
# create the root group
root = zarr.group(store, overwrite=True)
# add some readme for the user
root.attrs[
'README'] = "The schema adopted in this zarr store may undergo changes in the future"
root.attrs['sample_id'] = sample_id
# now iterate through list of expected groups and create them
for dataset in ZARR_GROUP:
root.create_group(dataset, overwrite=True)
return root
def create_zarr(self):
"""
Create a zarr for the contents of `self.data_model`. The grouped
structure of this zarr is:
root (filename)
| - phenom_0
| - phenom_1
| - ...
| - dimension_0
| - dimension_1
| - ...
| - phenom_n
| - ...
TODO: add global NetCDF attributes to outermost zarr structure?
"""
store = zarr.DirectoryStore(self.array_filename)
self.group = zarr.group(store=store)
# Write zarr datasets for data variables.
for domain in self.data_model.domains:
domain_vars = self.data_model.domain_varname_mapping[domain]
self.create_variable_datasets(domain_vars)
# Write zarr datasets for dimension variables.
keys = list(self.data_model.domain_varname_mapping.keys())
unique_flat_keys = set([k for domain in keys for k in domain])
self.create_variable_datasets(unique_flat_keys)
def hdf2zarr(source, target):
opened = False
if isinstance(source, (bytes, str)):
hdf5_filename = source
hdf5_file = h5py.File(source, "r")
opened = True
else:
hdf5_file = source
hdf5_filename = hdf5_file.filename
store = zarr.DirectoryStore(target)
root = zarr.group(store=store, overwrite=True)
def copy(name, obj):
if isinstance(obj, h5py.Group):
zarr_obj = root.create_group(name)
elif isinstance(obj, h5py.Dataset):
zarr_obj = root.create_dataset(name, data=obj, chunks=obj.chunks)
else:
assert False, "Unsupport HDF5 type."
zarr_obj.attrs.update(obj.attrs)
hdf5_file.visititems(copy)
if opened:
hdf5_file.close()
return root
def main(cfg):
# data_preprocessing
data_dir = cfg["data_dir"]
out_dir = cfg["out_dir"]
dat = HubmapDataset(data_dir, out_dir)
# db_zarr
db = zarr.open_group(store=zarr.DirectoryStore(cfg["zarr_db_dir"]),
mode="r")
# results dir
results_dir = dat.path.out / "normalization" / cfg["version"]
if cfg["version"] == "debug":
os.makedirs(results_dir, exist_ok=True)
else:
try:
os.makedirs(results_dir, exist_ok=False)
except:
raise Exception(f"Version {cfg['version']} exists!")
# save config
dat.jsn_dump(cfg, results_dir / "config.json")
# tiles
tile_dct = dat.pkl_load(dat.path.out / "tiles" / cfg['tiles_version'] /
"tile_dct.pkl")
tiles = tile_dct["train_df"]
# mean
sum = np.zeros(3)
N = (tiles["tile"].apply(lambda x: x[1] - x[0]) *
tiles["tile"].apply(lambda x: x[3] - x[2])).sum()
for _, row in tqdm(tiles.iterrows(), total=len(tiles)):
id_ = row["id"]
c = row["tile"]
slc = np.s_[c[0]:c[1], c[2]:c[3]]
img = db[id_]["img"][slc] / 255
sum += img.sum(axis=(0, 1))
mean = sum / N
dat.pkl_dump(mean, results_dir / "mean.pkl")
# std
diff_squared = np.zeros(3)
for _, row in tqdm(tiles.iterrows(), total=len(tiles)):
id_ = row["id"]
c = row["tile"]
slc = np.s_[c[0]:c[1], c[2]:c[3]]
img = db[id_]["img"][slc] / 255
diff_squared += ((img - mean)**2).sum(axis=(0, 1))
std = np.sqrt(diff_squared / N)
dat.pkl_dump(std, results_dir / "std.pkl")
print(f"MEAN: {mean}")
print(f"STD: {std}")
def init_zarr(sample_id, path, file_format):
"""Initializes the zarr output
Args:
sample_id (str): sample or cell id
path (str): path to the zarr output
fileformat (str): zarr file format [ DirectoryStore, ZipStore]
Returns:
zarr.hierarchy.Group
"""
store = None
if file_format == "DirectoryStore":
store = zarr.DirectoryStore(path)
if file_format == "ZipStore":
store = zarr.ZipStore(path, mode='w')
# create the root group
root = zarr.group(store, overwrite=True)
# add some readme for the user
root.attrs['README'] = (
"The schema adopted in this zarr store may undergo "
"changes in the future")
root.attrs['sample_id'] = sample_id
return root
def create_zarr(path: str, image: np.ndarray, chunk_size: int = 512) -> None:
print("Computing pyramid...")
pyramid = pyramid_gaussian(image,
downscale=2,
max_layer=4,
multichannel=True)
# Printer here seems to break writing the zarr file!?
# _dump_pyramid(pyramid)
store = zarr.DirectoryStore(path)
with zarr.group(store, overwrite=True) as group:
series = []
for i, layer in enumerate(pyramid):
if UINT8:
layer = (255 * layer).astype(np.uint8)
max_val = np.amax(layer)
print(
f"Layer {i} -> {layer.shape} -> {layer.dtype} -> max {max_val}"
)
path = "base" if i == 0 else f"L{i}"
group.create_dataset(path,
data=layer,
chunks=(chunk_size, chunk_size, 3))
series.append({"path": path})
multiscales = [{
"name": "pyramid",
"datasets": series,
"type": "pyramid"
}]
group.attrs["multiscales"] = multiscales
def _get_zarr_group(store):
if store is None:
# memory store
return None, zarr.group()
elif isinstance(store, str):
store = zarr.DirectoryStore(store)
return store, zarr.open_group(store=store, mode="a")
def __init__(
self,
params,
path: PathType,
sync_path: Optional[PathType] = None,
simulator=None,
):
"""Instantiate an iP3 store stored in a directory.
Args:
params (list of strings or int): List of paramater names. If int use ['z0', 'z1', ...].
path: path to storage directory
sync_path: path for synchronization via file locks (files will be stored in the given path).
It must differ from path, it must be accessible to all processes working on the store,
and the underlying filesystem must support file locking.
simulator: simulator object.
"""
zarr_store = zarr.DirectoryStore(path)
sync_path = sync_path or os.path.splitext(path)[0] + ".sync"
super().__init__(
params=params,
zarr_store=zarr_store,
sync_path=sync_path,
simulator=simulator,
)
def enumerate(self, fasta_file_list):
"""Create pytable objects and fill with kmer data
Overwrites any existing files
Args:
fasta_file_list(list): List of fasta file paths, one per line
Returns:
None
"""
with open(fasta_file_list, 'r') as infh:
fasta_files = infh.read().splitlines()
self.n = len(fasta_files)
# Kmer index lookup
if os.path.exists(self.leveldb_filepath):
shutil.rmtree(self.leveldb_filepath)
db = plyvel.DB(self.leveldb_filepath, create_if_missing=True)
# Zarr chunked dataframe
store = zarr.DirectoryStore(self.zarr_filepath)
group = zarr.hierarchy.group(store=store, overwrite=True)
za = group.zeros('ohe',
shape=(self.n, self.buffer),
dtype='u1',
chunks=(self.n, self.chunk))
for f in fasta_files:
self.count(f, db, za)
db.close()
def create_ome_zarr(zarr_directory, dtype="f4"):
base = np.tile(data.astronaut(), (4, 4, 1))
gaussian = list(pyramid_gaussian(base, downscale=2, max_layer=3, multichannel=True))
pyramid = []
# convert each level of pyramid into 5D image (t, c, z, y, x)
for pixels in gaussian:
red = pixels[:, :, 0]
green = pixels[:, :, 1]
blue = pixels[:, :, 2]
# wrap to make 5D: (t, c, z, y, x)
pixels = np.array([np.array([red]), np.array([green]), np.array([blue])])
pixels = np.array([pixels]).astype(dtype)
pyramid.append(pixels)
store = zarr.DirectoryStore(zarr_directory)
grp = zarr.group(store, overwrite=True)
paths = []
for path, dataset in enumerate(pyramid):
grp.create_dataset(str(path), data=pyramid[path])
paths.append({"path": str(path)})
image_data = {
"id": 1,
"channels": [
{
"color": "FF0000",
"window": {"start": 0, "end": 1},
"label": "Red",
"active": True,
},
{
"color": "00FF00",
"window": {"start": 0, "end": 1},
"label": "Green",
"active": True,
},
{
"color": "0000FF",
"window": {"start": 0, "end": 1},
"label": "Blue",
"active": True,
},
],
"rdefs": {
"model": "color",
},
}
multiscales = [
{
"version": "0.1",
"datasets": paths,
}
]
grp.attrs["multiscales"] = multiscales
grp.attrs["omero"] = image_data
def create_zarr_store(ds,
rootdir,
ignore_vars=[],
storetype='directory',
consolidated=True):
"""
OBSOLETE
Write each variable from a xarray Dataset ds into a new zarr ZipStore
under the root directory rootdir, excluding optional variables from
ignore_vars.
PARAMETERS:
===========
ds: xarray.Dataset
input dataset
rootdir: str
root path to the zarr stores
ignore_vars: list
variables to ignore
storetype: str
zarr store type (directory, zip)
consolidated: logical
zarr option to store (default = True)
RETURNS:
========
None
"""
for variable in ds.variables:
if variable not in ignore_vars:
print(f'writing {variable}')
# create a bogus dataset to copy a single variable
tmp = _xr.Dataset()
tmp[variable] = ds[variable]
# update output directory with variable name
outputdir = rootdir.replace('<VARNAME>', variable)
# create the output directory
check = subprocess.check_call(f'mkdir -p {outputdir}', shell=True)
exit_code(check)
# create a zarr store in write mode
store_exists = os.path.exists(f'{outputdir}/{variable}')
if storetype == 'directory' and not store_exists:
store = _zarr.DirectoryStore(f'{outputdir}/{variable}')
# then copy to zarr
tmp.to_zarr(store, consolidated=consolidated)
elif storetype == 'zip':
store = _zarr.ZipStore(f'{outputdir}/{variable}.zip', mode='w')
# then copy to zarr
tmp.to_zarr(store, mode='w', consolidated=consolidated)
# and close store
if storetype == 'zip':
store.close()
tmp.close()
return None
def convert(
input,
output,
chunk_size=16 * 1024 * 1024,
genome=None,
overwrite=False
):
input_path, input_ext = splitext(input)
output_path, output_ext = splitext(output)
print('converting: %s to %s' % (input, output))
if input_ext == '.h5' or input_ext == '.loom':
if output_ext == '.zarr':
# Convert 10x (HDF5) to Zarr
source = h5py.File(input)
zarr.tree(source)
store = zarr.DirectoryStore(output)
dest = zarr.group(store=store, overwrite=overwrite)
# following fails if without_attrs=False (the default), possibly related to https://github.com/h5py/h5py/issues/973
zarr.copy_all(source, dest, log=sys.stdout, without_attrs=True)
zarr.tree(dest)
elif output_ext == '.h5ad':
if not genome:
keys = list(h5py.File(input).keys())
if len(keys) == 1:
genome = keys[0]
else:
raise Exception(
'Set --genome flag when converting from 10x HDF5 (.h5) to Anndata HDF5 (.h5ad); top-level groups in file %s: %s'
% (input, ','.join(keys))
)
adata = read_10x_h5(input, genome=genome)
# TODO: respect overwrite flag
adata.write(output)
elif input_ext == '.h5ad':
adata = read_h5ad(input, backed='r')
(r, c) = adata.shape
chunks = (getsize(input) - 1) / chunk_size + 1
chunk_size = (r - 1) / chunks + 1
if output_ext == '.zarr':
print('converting %s (%dx%d) to %s in %d chunks (%d rows each)' % (input, r, c, output, chunks, chunk_size))
# TODO: respect overwrite flag
adata.write_zarr(
make_store(output),
chunks=(chunk_size, c)
)
else:
raise Exception('Unrecognized output extension: %s' % output_ext)
else:
raise Exception('Unrecognized input extension: %s' % input_ext)
def load(cls, path: PathType):
"""Load existing DirectoryStore state into a MemoryStore object."""
memory_store = zarr.MemoryStore()
directory_store = zarr.DirectoryStore(path)
zarr.convenience.copy_store(source=directory_store, dest=memory_store)
group = zarr.group(store=memory_store)
xshape = cls._extract_xshape_from_zarr_group(group)
zdim = cls._extract_zdim_from_zarr_group(group)
return MemoryStore(zdim=zdim, xshape=xshape, store=memory_store)
def make_store(path):
m = re.match("^gc?s://", path)
if m:
return GCSMap(path[len(m.group(0)):], gcs=gcsFileSystem())
if path.startswith("s3://"):
s3 = S3FileSystem()
return S3Map(path[len("s3://"):], s3=s3)
return zarr.DirectoryStore(path)
def _benchmark_load_zarr_datasets(self, zarr_paths):
callsets = []
self.benchmark_profiler.start_benchmark(
operation_name="Load Zarr Dataset")
for zarr_path in zarr_paths:
store = zarr.DirectoryStore(zarr_path)
callset = zarr.Group(store=store, read_only=True)
callsets.append(callset)
self.benchmark_profiler.end_benchmark()
return callsets
def make_store(path):
m = re.match('^gc?s://', path)
if m:
gcs = gcsfs.GCSFileSystem()
return gcsfs.mapping.GCSMap(path[len(m.group(0)):], gcs=gcs)
if path.startswith('s3://'):
s3 = s3fs.S3FileSystem()
return s3fs.mapping.S3Map(path[len('s3://')], s3=s3)
return zarr.DirectoryStore(path)
def save(self, path: PathType) -> None:
"""Save the current state of the MemoryStore to a directory."""
path = Path(path)
if path.exists() and not path.is_dir():
raise NotADirectoryError(f"{path} should be a directory")
elif path.exists() and not is_empty(path):
raise FileExistsError(f"{path} is not empty")
else:
path.mkdir(parents=True, exist_ok=True)
zarr_store = zarr.DirectoryStore(path)
zarr.convenience.copy_store(source=self.store, dest=store)
return None
def __init__(self, filename, cache_size=512 * (1024**2)):
"""
An object for accessing rss data from s3 blob storage.
Parameters
----------
filename : path to rss data object on disk.
"""
store = zarr.DirectoryStore(f"{filename}")
root = zarr.open(store, mode="r")
super().__init__(store, cache_size=cache_size)
def save_multiple_images(
array: da.Array, output_file: Path, write_mode: str = "x"
) -> None:
"""
Calculate and store a Dask array in an HDF5 file without exceeding available memory.
Use the Dask distributed scheduler to compute a Dask array and store the
resulting values to a data set 'data' in the root group of an HDF5 file. The
distributed scheduler is capable of managing worker memory better than the
default scheduler. In the latter case, the workers can sometimes demand more
than the available amount of memory. Using the distributed scheduler avoids this
problem.
The distributed scheduler cannot write directly to HDF5 files because h5py.File
objects are not serialisable. To work around this issue, the data are first
stored to a Zarr DirectoryStore, then copied to the final HDF5 file and the Zarr
store deleted.
Multithreading is used, as the calculation is assumed to be I/O bound.
Args:
array: A Dask array to be calculated and stored.
output_file: Path to the output HDF5 file.
write_mode: HDF5 file opening mode. See :class:`h5py.File`.
"""
# Set a more generous connection timeout than the default 30s.
with dask.config.set(
{
"distributed.comm.timeouts.connect": "60s",
"distributed.comm.timeouts.tcp": "60s",
"distributed.deploy.lost-worker-timeout": "60s",
"distributed.scheduler.idle-timeout": "600s",
"distributed.scheduler.locks.lease-timeout": "60s",
}
):
intermediate = str(output_file.with_suffix(".zarr"))
# Overwrite any pre-existing Zarr storage. Don't compute immediately but
# return the Array object so we can compute it with a progress bar.
method = {"overwrite": True, "compute": False, "return_stored": True}
# Prepare to save the calculated images to the intermediate Zarr store.
array = array.to_zarr(intermediate, component="data", **method)
# Compute the Array and store the values, using a progress bar.
progress(array.persist())
print("\nTransferring the images to the output file.")
store = zarr.DirectoryStore(intermediate)
with h5py.File(output_file, write_mode) as f:
zarr.copy_all(zarr.open(store), f, **Bitshuffle())
# Delete the Zarr store.
store.clear()
def write_dataset_zarr(dataset, path, key='images'):
"""
Given a PyTorch Dataset or array_like, write a Zarr dataset.
We assume that the dataset returns either a single image, or a tuple whose
first entry is an image. For example, in order to return both an image and a
set of labels, the dataset can return those as a pair of torch Tensors. Note
that the names of the extra members of the tuple can be overridden with the
argument 'extra_keys'.
"""
try:
import zarr, lmdb
except ImportError:
print(
'Please install the zarr and lmdb libraries to use write_dataset_zarr.'
)
raise
from .utils import tqdm
if not isinstance(key, tuple):
# make key a tuple if it's not already
key = (key, )
store = zarr.DirectoryStore(path)
root = zarr.group(store=store, overwrite=True)
# determine size needed for h5 dataset
ds0 = dataset[0]
if not isinstance(ds0, tuple):
ds0 = (ds0, )
# check that the length of the tuple matches args
if len(ds0) != len(key):
raise Exception(f"Dataset returns tuple with {len(ds0)} entries, "
"but only {len(key)} keys given")
ds = []
for d, k in zip(ds0, key):
dtype = d.dtype
if isinstance(d, torch.Tensor): # need a numpy dtype for h5py
dtype = d.view(-1)[0].cpu().numpy().dtype
sh = d.shape
ds.append(
root.zeros('/' + k,
shape=(len(dataset), *sh),
chunks=(1, *sh),
dtype=dtype))
for i, di in enumerate(tqdm(dataset)):
if not isinstance(di, (tuple, list)):
di = [di]
for I, dsi in zip(di, ds):
if isinstance(I, torch.Tensor):
I = I.cpu().numpy()
dsi[i, ...] = I
def test_local(self):
cube = new_cube(time_periods=10,
time_start='2019-01-01',
variables=dict(precipitation=0.1,
temperature=270.5,
soil_moisture=0.2))
cube = chunk_dataset(cube,
dict(time=1, lat=90, lon=90),
format_name='zarr')
cube.to_zarr(self.CUBE_PATH)
cube.close()
diagnostic_store = DiagnosticStore(
zarr.DirectoryStore(self.CUBE_PATH),
logging_observer(log_path='local-cube.log'))
xr.open_zarr(diagnostic_store)