Make visual changes to multi-file summary data

ui.py

@@ -426,22 +426,20 @@ def render_multifile_summary(plotly_config=None):
                 st.session_state.categories, st.session_state.categorySelect,
                 speakerRenames=st.session_state.speakerRenames,
             )
-            st.plotly_chart(
-                px.bar(df6, x="files", y=allCategories,
-                       title="Time Spoken by Each Speaker/Role in Each File"),
-                use_container_width=True, config=cfg,
-            )
+            fig6 = px.bar(df6, x="files", y=allCategories,
+                           title="Proportion of File Duration Spoken by Each Speaker/Role")
+            fig6.update_layout(yaxis_title="Proportion of File Duration")
+            st.plotly_chart(fig6, use_container_width=True, config=cfg)
             st.caption("Note: Overlaps between speakers of the same role are only counted once.")
 
             df7, _ = utils.build_multifile_voice_df(validNames, st.session_state.summaries)
             for sort_cols, ascending, title in [
-                (["Single Voice", "Multi Voice"], True,  "Cross-file Voice Categories sorted for Single Voice"),
-                (["Multi Voice",  "Single Voice"], True,  "Cross-file Voice Categories sorted for Multi Voice"),
-                (["No Voice",    "Multi Voice"], False, "Cross-file Voice Categories sorted for Any Voice"),
+                (["Single Voice", "Multi Voice"], True,  "Cross-file Voice Categories sorted by Single Voice (least → most)"),
+                (["Multi Voice",  "Single Voice"], True,  "Cross-file Voice Categories sorted by Multi Voice (least → most)"),
+                (["No Voice",    "Multi Voice"], False, "Cross-file Voice Categories sorted by No Voice (most → least)"),
             ]:
-                st.plotly_chart(
-                    px.bar(df7.sort_values(by=sort_cols, ascending=ascending),
-                           x="files", y=["Single Voice", "Multi Voice", "No Voice"],
-                           title=title),
-                    use_container_width=True, config=cfg,
-                )
+                fig7 = px.bar(df7.sort_values(by=sort_cols, ascending=ascending),
+                              x="files", y=["Single Voice", "Multi Voice", "No Voice"],
+                              title=title)
+                fig7.update_layout(yaxis_title="Proportion of File Duration")
+                st.plotly_chart(fig7, use_container_width=True, config=cfg)