Update example notebooks with links that work

.virtual_documents/docs/notebooks/demo_select_channels.ipynb

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+import easy_vitessce as ev 
+import spatialdata as sd
+import spatialdata_plot
+from os.path import join 
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+import os
+from os.path import join, isfile, isdir
+from urllib.request import urlretrieve
+import zipfile
+
+
+data_dir = "data"
+zip_path = join(data_dir, "mcmicro_io.spatialdata.zarr.zip")
+sdata_path = join(data_dir, "mcmicro_io.spatialdata.zarr")
+
+
+if not isdir(sdata_path):
+    if not isfile(zip_path):
+        os.makedirs(data_dir, exist_ok=True)
+        urlretrieve('https://mghp.osn.xsede.org/bir190004-bucket01/BiocSpatialData/mcmicro_io.zip', zip_path)
+    with zipfile.ZipFile(zip_path,"r") as zip_ref:
+        zip_ref.extractall(data_dir)
+        os.rename(join(data_dir, "data.zarr"), sdata_path)
+
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+
+sdata = sd.read_zarr(sdata_path)
+sdata
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+vw = sdata.pl.render_images(element="exemplar-001_image").pl.show()
+vw
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+current_config = vw._config
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+meta_scopes = current_config["coordinationSpace"]["metaCoordinationScopes"]
+meta_scopes_by = current_config["coordinationSpace"]["metaCoordinationScopesBy"]
+
+
+first_layer_scope = meta_scopes['init_A_image_0']['imageLayer'][0]
+first_layer_scope
+
+
+channel_scope_names = meta_scopes_by['init_A_image_0']['imageLayer']['imageChannel'][first_layer_scope]
+channel_scope_names
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+channel_colors = current_config["coordinationSpace"]["spatialChannelColor"]
+channel_colors
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+first_channel_color = channel_colors[channel_scope_names[0]]
+first_channel_color
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+channel_windows = current_config["coordinationSpace"]["spatialChannelWindow"]
+channel_windows
+
+
+first_channel_window = channel_windows[channel_scope_names[0]]
+first_channel_window
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