WIP: ENH: MultiscaleSpatialImage is an xarray DataTree

[thewtex]

No description provided.

[thewtex]

Example consolidated metadata:

{
    "metadata": {
        ".zattrs": {
            "multiscales": [
                {
                    "axes": [
                        {
                            "name": "y",
                            "type": "space"
                        },
                        {
                            "name": "x",
                            "type": "space"
                        }
                    ],
                    "datasets": [
                        {
                            "coordinateTransformations": [
                                {
                                    "scale": [
                                        1.0,
                                        1.0
                                    ],
                                    "type": "scale"
                                },
                                {
                                    "translation": [
                                        0.0,
                                        0.0
                                    ],
                                    "type": "translation"
                                }
                            ],
                            "path": "0/cthead1"
                        },
                        {
                            "coordinateTransformations": [
                                {
                                    "scale": [
                                        4.0,
                                        4.0
                                    ],
                                    "type": "scale"
                                },
                                {
                                    "translation": [
                                        1.5,
                                        1.5
                                    ],
                                    "type": "translation"
                                }
                            ],
                            "path": "1/cthead1"
                        },
                        {
                            "coordinateTransformations": [
                                {
                                    "scale": [
                                        8.0,
                                        8.0
                                    ],
                                    "type": "scale"
                                },
                                {
                                    "translation": [
                                        3.5,
                                        3.5
                                    ],
                                    "type": "translation"
                                }
                            ],
                            "path": "2/cthead1"
                        }
                    ],
                    "name": "cthead1",
                    "version": "0.4"
                }
            ]
        },
        ".zgroup": {
            "zarr_format": 2
        },
        "0/.zattrs": {},
        "0/.zgroup": {
            "zarr_format": 2
        },
        "0/cthead1/.zarray": {
            "chunks": [
                64,
                64
            ],
            "compressor": {
                "blocksize": 0,
                "clevel": 5,
                "cname": "zstd",
                "id": "blosc",
                "shuffle": 1
            },
            "dtype": "|u1",
            "fill_value": null,
            "filters": null,
            "order": "C",
            "shape": [
                256,
                256
            ],
            "zarr_format": 2
        },
        "0/cthead1/.zattrs": {
            "_ARRAY_DIMENSIONS": [
                "y",
                "x"
            ],
            "direction": [
                [
                    1.0,
                    0.0
                ],
                [
                    0.0,
                    1.0
                ]
            ]
        },
        "0/x/.zarray": {
            "chunks": [
                256
            ],
            "compressor": {
                "blocksize": 0,
                "clevel": 5,
                "cname": "lz4",
                "id": "blosc",
                "shuffle": 1
            },
            "dtype": "<f8",
            "fill_value": "NaN",
            "filters": null,
            "order": "C",
            "shape": [
                256
            ],
            "zarr_format": 2
        },
        "0/x/.zattrs": {
            "_ARRAY_DIMENSIONS": [
                "x"
            ]
        },
        "0/y/.zarray": {
            "chunks": [
                256
            ],
            "compressor": {
                "blocksize": 0,
                "clevel": 5,
                "cname": "lz4",
                "id": "blosc",
                "shuffle": 1
            },
            "dtype": "<f8",
            "fill_value": "NaN",
            "filters": null,
            "order": "C",
            "shape": [
                256
            ],
            "zarr_format": 2
        },
        "0/y/.zattrs": {
            "_ARRAY_DIMENSIONS": [
                "y"
            ]
        },
        "1/.zattrs": {},
        "1/.zgroup": {
            "zarr_format": 2
        },
        "1/cthead1/.zarray": {
            "chunks": [
                16,
                16
            ],
            "compressor": {
                "blocksize": 0,
                "clevel": 5,
                "cname": "lz4",
                "id": "blosc",
                "shuffle": 1
            },
            "dtype": "<f8",
            "fill_value": "NaN",
            "filters": null,
            "order": "C",
            "shape": [
                64,
                64
            ],
            "zarr_format": 2
        },
        "1/cthead1/.zattrs": {
            "_ARRAY_DIMENSIONS": [
                "y",
                "x"
            ],
            "direction": [
                [
                    1.0,
                    0.0
                ],
                [
                    0.0,
                    1.0
                ]
            ]
        },
        "1/x/.zarray": {
            "chunks": [
                256
            ],
            "compressor": {
                "blocksize": 0,
                "clevel": 5,
                "cname": "lz4",
                "id": "blosc",
                "shuffle": 1
            },
            "dtype": "<f8",
            "fill_value": "NaN",
            "filters": null,
            "order": "C",
            "shape": [
                64
            ],
            "zarr_format": 2
        },
        "1/x/.zattrs": {
            "_ARRAY_DIMENSIONS": [
                "x"
            ]
        },
        "1/y/.zarray": {
            "chunks": [
                256
            ],
            "compressor": {
                "blocksize": 0,
                "clevel": 5,
                "cname": "lz4",
                "id": "blosc",
                "shuffle": 1
            },
            "dtype": "<f8",
            "fill_value": "NaN",
            "filters": null,
            "order": "C",
            "shape": [
                64
            ],
            "zarr_format": 2
        },
        "1/y/.zattrs": {
            "_ARRAY_DIMENSIONS": [
                "y"
            ]
        },
        "2/.zattrs": {},
        "2/.zgroup": {
            "zarr_format": 2
        },
        "2/cthead1/.zarray": {
            "chunks": [
                8,
                8
            ],
            "compressor": {
                "blocksize": 0,
                "clevel": 5,
                "cname": "lz4",
                "id": "blosc",
                "shuffle": 1
            },
            "dtype": "<f8",
            "fill_value": "NaN",
            "filters": null,
            "order": "C",
            "shape": [
                32,
                32
            ],
            "zarr_format": 2
        },
        "2/cthead1/.zattrs": {
            "_ARRAY_DIMENSIONS": [
                "y",
                "x"
            ],
            "direction": [
                [
                    1.0,
                    0.0
                ],
                [
                    0.0,
                    1.0
                ]
            ]
        },
        "2/x/.zarray": {
            "chunks": [
                256
            ],
            "compressor": {
                "blocksize": 0,
                "clevel": 5,
                "cname": "lz4",
                "id": "blosc",
                "shuffle": 1
            },
            "dtype": "<f8",
            "fill_value": "NaN",
            "filters": null,
            "order": "C",
            "shape": [
                32
            ],
            "zarr_format": 2
        },
        "2/x/.zattrs": {
            "_ARRAY_DIMENSIONS": [
                "x"
            ]
        },
        "2/y/.zarray": {
            "chunks": [
                256
            ],
            "compressor": {
                "blocksize": 0,
                "clevel": 5,
                "cname": "lz4",
                "id": "blosc",
                "shuffle": 1
            },
            "dtype": "<f8",
            "fill_value": "NaN",
            "filters": null,
            "order": "C",
            "shape": [
                32
            ],
            "zarr_format": 2
        },
        "2/y/.zattrs": {
            "_ARRAY_DIMENSIONS": [
                "y"
            ]
        }
    },
    "zarr_consolidated_format": 1
}

[joshmoore]

Pitched in ome/ngff#114

[thewtex]

There is still more work to do, but merging to use in the DANDI hackathon.