scale edges

app.py

@@ -154,8 +154,7 @@ for i in range(len(neighbors.index)):
         "data" : {
             "source" : edge["gene_id_1"],
             "target" : edge["gene_id_2"],
-            "width" : 20 if edge["coexp_score"] > 0.9 else 5}})
-
+            "width" : 5 + 20 / (1 + np.exp(-10 * (edge["coexp_score"] - 0.9)))}})
 
 with col3:
     st.text('') # help alignment with input box