Next Try

app.py

@@ -1595,9 +1595,13 @@ def run_model(model_name):
                     )
                     
                     if reduction_method == "UMAP" and nan_mask.any():
-                        transparent_layer = np.full_like(heatmap_data, np.nan)
+                        transparent_layer = np.full_like(heatmap_data, np.nanmin(heatmap_data))
                         transparent_layer[nan_mask] = np.nanmin(heatmap_data)
-                        transparent_mapper = LinearColorMapper(palette=["rgba(255,255,255,0)"], low=np.nanmin(heatmap_data), high=np.nanmax(heatmap_data))
+                        transparent_mapper = LinearColorMapper(
+                            palette=["rgba(255,255,255,0)"],
+                            low=np.nanmin(heatmap_data),
+                            high=np.nanmax(heatmap_data)
+                        )
                         heatmap_fig.image(
                             image=[transparent_layer],
                             x=x_min, y=y_min,