Corrected compatibility check.

pes_to_spec/model.py

@@ -652,9 +652,9 @@ class Model(TransformerMixin, BaseEstimator):
         """
         selection_model = self.x_model['select']
         low_res = selection_model.transform(low_res_data, keep_dictionary_structure=True)
-        pca_model = self.channel_pca_model.named_steps['pca']
         quality = {channel: 0.0 for channel in low_res.keys()}
         for channel in low_res.keys():
+            pca_model = self.channel_pca_model[channel].named_steps['pca']
             low_pca = pca_model.transform(low_res[channel])
             low_pca_rec = pca_model.inverse_transform(low_pca)
             low_pca_unc = self.channel_pca_model.named_steps['unc'].uncertainty()