Multiple Positions
This example demonstrates how to write multiple 5D images (positions) using ome_writers.
"""Basic example of using ome_writers to write a multiposition 5D image series."""
import sys
from pathlib import Path
import numpy as np
from ome_writers import AcquisitionSettings, Dimension, create_stream
# Derive format/backend from command line argument (default: auto)
FORMAT = "auto" if len(sys.argv) < 2 else sys.argv[1]
# create acquisition settings
settings = AcquisitionSettings(
root_path="example_5d_series",
# declare dimensions in order of acquisition (slowest to fastest)
dimensions=[
Dimension(name="t", count=2, chunk_size=1, type="time"),
Dimension(name="p", type="position", coords=["Pos0", "Pos1"]),
Dimension(name="c", count=3, chunk_size=1, type="channel"),
Dimension(name="z", count=4, chunk_size=1, type="space", scale=5, unit="um"),
Dimension(name="y", count=256, chunk_size=64, type="space", scale=2, unit="um"),
Dimension(name="x", count=256, chunk_size=64, type="space", scale=2, unit="um"),
],
dtype="uint16",
overwrite=True,
format=FORMAT,
)
num_frames = np.prod(settings.shape[:-2])
frame_shape = settings.shape[-2:]
# create stream and write frames
with create_stream(settings) as stream:
for i in range(num_frames):
frame = np.full(frame_shape, fill_value=i, dtype=settings.dtype)
stream.append(frame)
if settings.format.name == "ome-zarr":
import yaozarrs
yaozarrs.validate_zarr_store(settings.output_path)
print("✓ Zarr store is valid")
if settings.format.name == "ome-tiff":
from ome_types import from_tiff
for file in Path(settings.output_path).glob("*.tiff"):
from_tiff(file)
print(f"✓ TIFF file {file} is valid")