fix: fix conditional when normalized channel axis resolves to 0 (#135)

pyapp-kit · Feb 11, 2025 · 2120fc9 · 2120fc9
1 parent 17dd5c1
commit 2120fc9
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/src/ndv/controllers/_array_viewer.py b/src/ndv/controllers/_array_viewer.py
@@ -335,7 +335,7 @@ def _update_visible_sliders(self) -> None:
             return
         hidden_indices: set[int] = set(self._data_model.normed_visible_axes)
         if self._data_model.display.channel_mode.is_multichannel():
-            if ch := self._data_model.normed_channel_axis:
+            if (ch := self._data_model.normed_channel_axis) is not None:
                 hidden_indices.add(ch)
 
         # hide singleton axes

diff --git a/src/ndv/models/_data_display_model.py b/src/ndv/models/_data_display_model.py
@@ -200,7 +200,7 @@ def current_slice_requests(self) -> list[DataRequest]:
 
         # if we need to request multiple channels (composite mode or RGB),
         # ensure that the channel axis is also sliced
-        if c_ax := self.normed_channel_axis:
+        if (c_ax := self.normed_channel_axis) is not None:
             if self.display.channel_mode.is_multichannel():
                 if not isinstance(requested_slice.get(c_ax), slice):
                     requested_slice[c_ax] = slice(None)