example_grid_layout.py

import argparse
import webbrowser

import neuroglancer
import neuroglancer.cli

if __name__ == "__main__":
    ap = argparse.ArgumentParser()
    neuroglancer.cli.add_server_arguments(ap)
    args = ap.parse_args()
    neuroglancer.cli.handle_server_arguments(args)
    viewer = neuroglancer.Viewer()

    with viewer.txn() as s:
        s.layers["image"] = neuroglancer.ImageLayer(
            source="precomputed://gs://neuroglancer-public-data/flyem_fib-25/image",
        )
        s.layers["ground_truth"] = neuroglancer.SegmentationLayer(
            source="precomputed://gs://neuroglancer-public-data/flyem_fib-25/ground_truth",
        )
        s.layout = neuroglancer.row_layout(
            [
                neuroglancer.column_layout(
                    [
                        neuroglancer.LayerGroupViewer(layers=["image", "ground_truth"]),
                        neuroglancer.LayerGroupViewer(layers=["image", "ground_truth"]),
                    ]
                ),
                neuroglancer.column_layout(
                    [
                        neuroglancer.LayerGroupViewer(layers=["ground_truth"]),
                        neuroglancer.LayerGroupViewer(layers=["ground_truth"]),
                    ]
                ),
            ]
        )
    print(viewer.state)
    print(viewer)
    webbrowser.open_new(viewer.get_viewer_url())