comments

Output/cn.js

@@ -56,6 +56,12 @@ d3.json("json_text.json").then(function(graph) {
     update(graph.links, graph.nodes);
 })
 
+/**
+* display links and nodes (with circle and text)
+* initialises link, node objects
+* @param {object} nodes - nodes
+* @param {object} links - links
+*/
 function update(links, nodes) {
     link = g.append("g")
         .selectAll(".link")
@@ -118,10 +124,20 @@ simulation.force("link")
     .links(links);
 }
 
+/**
+* returns true if link is directly connected to node and false if it is not
+* @param {object} node - node
+* @param {object} link - link
+*/
 function isLinkForNode(node, link){
 return link.source.index == node.index || link.target.index == node.index;
 }
 
+/**
+* sets color of link (line and arrowhead) to black if it is directly connected to node
+* and to grey otherwise
+* @param {object} node - node
+*/
 function marklink(node){
     d3.selectAll(".link")
         .style("stroke", function(o) {
@@ -130,6 +146,10 @@ function marklink(node){
             return isLinkForNode(node, o) ? marker('#000000') : marker('#999');})
 }
 
+/**
+* creates arrowhead and returns its url
+* @param {string} color - color of arrowhead
+*/
 function marker(color) {
     svg.append('defs').append('marker')//arrowhead
         .attr('id',color.replace("#", ""))
@@ -149,7 +169,7 @@ function marker(color) {
 
 /**
 * returns last name of first author
-* @param {string} authors - The comma-separated string of authors
+* @param {string} authors - the comma-separated string of authors
 */
 function firstauthor(authors){
     if (/,/.test(authors)==false){
@@ -161,6 +181,10 @@ function firstauthor(authors){
     return firstauthor[1]
 }
 
+/**
+* outputs node info to textbox
+* @param {object} d - data of current node
+*/
 function textfunc(d){
     document.getElementById('textbox').innerHTML = "Title:" + '</br>' + d.name +
     '</br>' +'</br>'+"Author:"+ '</br>' +d.author+'</br>'+'</br>'+"Year:"+'</br>'+d.year+'</br>'+'</br>'