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Raise detailed exception with unsupported channel information #83

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Oct 3, 2023
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Raise detailed exception with unsupported channel information #83

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15 changes: 13 additions & 2 deletions pytools/HedwigZarrImage.py
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Original file line number Diff line number Diff line change
Expand Up @@ -225,9 +225,20 @@ def neuroglancer_shader_parameters(self, mad_scale=3) -> dict:

if _shader_type == "MultiChannel":
assert self._ome_ngff_multiscale_dims()[1] == "C"
assert len(list(self.ome_info.channel_names(self.ome_idx))) == self.shape[1]

if len(list(self.ome_info.channel_names(self.ome_idx))) != self.shape[1]:
raise RuntimeError(
f"Mismatch of number of Channels! Array has {self.shape[1]} but there"
f"are {len(list(self.ome_info.channel_names(self.ome_idx)))} names:"
f"{list(self.ome_info.channel_names(self.ome_idx))}"
)
color_sequence = ["red", "green", "blue", "cyan", "yellow", "magenta"]
assert self.shape[1] <= len(color_sequence)

if self.shape[1] > len(color_sequence):
raise RuntimeError(
f"Too many channels! The array has {self.shape[1]} channels but"
f" only {len(color_sequence)} is supported!"
)

json_channel_array = []

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