Update dash_plotly_QC_scRNA.py

dash_plotly_QC_scRNA.py

@@ -395,7 +395,7 @@ def update_graph_and_pie_chart(batch_chosen, s_chosen, g2m_chosen, condition1_ch
     
     # Melt wide format DataFrame into long format
     dff_pre = dff.with_columns(["batch","Cdc45","Uhrf1","Mcm2","Slbp","Mcm5","Pola1","Gmnn","Cdc6","Rrm2","Atad2"])
-    dff_pre = dff_pre.with_columns(dff_pre['batch'].cast(pl.String))
+    dff_pre = dff_pre.with_columns(dff_pre['batch'].cast(pl.Utf8))
     dff_long = dff_pre.melt(id_vars="batch", variable_name="Gene", value_name="Expression")
     expression_means = dff_long.group_by(["Region", "Gene"]).agg(pl.mean("Expression"))