creating links

app.js

@@ -14,6 +14,15 @@ var nodesData =  [
     {"name": "Emerald", "sex": "F"}
 ];
 
+var linksData = [
+    {"source": "Travis", "target": "Rake"},
+    {"source": "Diana", "target": "Rake"},
+    {"source": "Diana", "target": "Rachel"},
+    {"source": "Rachel", "target": "Rake"},
+    {"source": "Rachel", "target": "Shawn"},
+    {"source": "Emerald", "target": "Rachel"}
+];
+
 var nodes = d3.select("g")
         .selectAll("circle")
         .data(nodesData)
@@ -24,6 +33,10 @@ d3.forceSimulation()
     .nodes(nodesData)
     .force("charge_force", d3.forceManyBody())
     .force("center_force", d3.forceCenter(WIDTH / 2, HEIGHT / 2)) //position centering force at center x,y coords
+    .force("links", d3.forceLink(linksData)
+        .id(function(datum){
+            return datum.name
+        }))
     .on("tick", function(){
         nodes.attr("cx", function(datum) { return datum.x; })
             .attr("cy", function(datum) { return datum.y; });