Javascript 如何在d3.js图形库中基于节点id将边与节点连接
这段代码与下面给定的JSON data1对象配合得很好,但我希望这段代码与这个新的_JSON对象配合使用。我想在节点id上建立链接。有什么帮助吗Javascript 如何在d3.js图形库中基于节点id将边与节点连接,javascript,json,d3.js,Javascript,Json,D3.js,这段代码与下面给定的JSON data1对象配合得很好,但我希望这段代码与这个新的_JSON对象配合使用。我想在节点id上建立链接。有什么帮助吗 var new_json = {{"nodes": [{ "id": 124587, "name": "paper1", "citation": 5, "group": 1 }, { "id": 178456, "name": "paper2", "citation": 8, "group": 2 }], "links": [{ "source":
var new_json = {{"nodes": [{ "id": 124587, "name": "paper1", "citation": 5, "group": 1 },
{ "id": 178456, "name": "paper2", "citation": 8, "group": 2 }],
"links": [{ "source": 124587, "target": 178456, "name": "A-B-1", "value": 8 }]};
function load_graph(text) {
var color = d3.scale.category20();
var data1 = {
"nodes": [
{ "id": 0, "name": "paper1", "citation": 5, "group": 1 },
{ "id": 1, "name": "paper2", "citation": 8, "group": 2 },
{ "id": 2, "name": "paper3", "citation": 12, "group": 3 },
{ "id": 3, "name": "paper4", "citation": 25, "group": 4 },
{ "id": 4, "name": "paper5", "citation": 15, "group": 5 },
{ "id": 5, "name": "paper6", "citation": 5, "group": 1 },
{ "id": 6, "name": "paper7", "citation": 8, "group": 2 },
{ "id": 7, "name": "paper8", "citation": 12, "group": 3 },
{ "id": 8, "name": "paper9", "citation": 25, "group": 4 },
{ "id": 9, "name": "paper10", "citation": 15, "group": 5 }
],
"links": [
{ "source": 0, "target": 1, "name": "A-B-1", "value": 8 },
{ "source": 0, "target": 1, "name": "A-B-2", "value": 24 },
{ "source": 0, "target": 2, "name": "A-C-1", "value": 12 },
{ "source": 0, "target": 2, "name": "A-C-3", "value": 44 },
{ "source": 2, "target": 3, "name": "A-D-1", "value": 11 },
{ "source": 2, "target": 3, "name": "A-D-2", "value": 35 },
{ "source": 2, "target": 4, "name": "A-E-1", "value": 16 },
{ "source": 2, "target": 4, "name": "A-E-5", "value": 30 },
{ "source": 4, "target": 5, "name": "A-B-1", "value": 8 },
{ "source": 4, "target": 5, "name": "A-B-2", "value": 24 },
{ "source": 5, "target": 6, "name": "A-C-1", "value": 12 },
{ "source": 5, "target": 6, "name": "A-C-3", "value": 44 },
{ "source": 5, "target": 7, "name": "A-D-1", "value": 11 },
{ "source": 5, "target": 7, "name": "A-D-2", "value": 35 },
{ "source": 7, "target": 8, "name": "A-E-1", "value": 16 },
{ "source": 7, "target": 8, "name": "A-E-5", "value": 30 },
{ "source": 8, "target": 3, "name": "A-C-1", "value": 12 },
{ "source": 8, "target": 3, "name": "A-C-3", "value": 44 },
{ "source": 8, "target": 9, "name": "A-D-1", "value": 11 },
{ "source": 8, "target": 9, "name": "A-D-2", "value": 35 }
]
};
// used to store the number of links between two nodes.
// mLinkNum[data.links[i].source + "," + data.links[i].target] = data.links[i].linkindex;
var mLinkNum = {};
// sort links first
sortLinks();
// set up linkIndex and linkNumer, because it may possible multiple links share the same source and target node
setLinkIndexAndNum();
var w = 960,
h = 500;
var force = d3.layout.force()
.nodes(d3.values(data1.nodes))
.links(data1.links)
.size([w, h])
.linkDistance(200)
.charge(-300)
.on("tick", tick)
.start();
var svg = d3.select(".graphContainer").append("svg:svg")
.attr("width", w)
.attr("height", h);
var path = svg.append("svg:g")
.selectAll("line")
.data(force.links())
.enter().append("svg:path")
.attr("class", "link")
.style("stroke-width", function (d) { return Math.sqrt(d.value); });
var circle = svg.append("svg:g")
.selectAll("circle")
.data(force.nodes())
.enter().append("svg:circle")
.attr("r", function (d) { return (d.citation); })
.style("fill", function (d) { return color(d.group); })
.call(force.drag);
var text = svg.append("svg:g")
.selectAll("g")
.data(force.nodes())
.enter().append("svg:g");
// A copy of the text with a thick white stroke for legibility.
text.append("svg:text")
.attr("x", 8)
.attr("y", ".31em")
.attr("class", "shadow")
.text(function (d) { return d.name; });
text.append("svg:text")
.attr("x", 8)
.attr("y", ".31em")
.text(function (d) { return d.name; });
// Use elliptical arc path segments to doubly-encode directionality.
function tick() {
path.attr("d", function (d) {
var dx = d.target.x - d.source.x,
dy = d.target.y - d.source.y,
dr = Math.sqrt(dx * dx + dy * dy);
// get the total link numbers between source and target node
var lTotalLinkNum = mLinkNum[d.source.id + "," + d.target.id] || mLinkNum[d.target.id + "," + d.source.id];
if (lTotalLinkNum > 1) {
// if there are multiple links between these two nodes, we need generate different dr for each path
dr = dr / (1 + (1 / lTotalLinkNum) * (d.linkindex - 1));
}
// generate svg path
return "M" + d.source.x + "," + d.source.y +
"A" + dr + "," + dr + " 0 0 1," + d.target.x + "," + d.target.y +
"A" + dr + "," + dr + " 0 0 0," + d.source.x + "," + d.source.y;
});
// Add tooltip to the connection path
path.append("svg:title")
.text(function (d, i) { return d.name; });
circle.attr("transform", function (d) {
return "translate(" + d.x + "," + d.y + ")";
});
text.attr("transform", function (d) {
return "translate(" + d.x + "," + d.y + ")";
});
}
// sort the links by source, then target
function sortLinks() {
data.links.sort(function (a, b) {
if (a.source > b.source) {
return 1;
}
else if (a.source < b.source) {
return -1;
}
else {
if (a.target > b.target) {
return 1;
}
if (a.target < b.target) {
return -1;
}
else {
return 0;
}
}
});
}
//any links with duplicate source and target get an incremented 'linknum'
function setLinkIndexAndNum() {
for (var i = 0; i < data.links.length; i++) {
if (i != 0 &&
data.links[i].source == data.links[i - 1].source &&
data.links[i].target == data.links[i - 1].target) {
data.links[i].linkindex = data.links[i - 1].linkindex + 1;
}
else {
data.links[i].linkindex = 1;
}
// save the total number of links between two nodes
if (mLinkNum[data.links[i].target + "," + data.links[i].source] !== undefined) {
mLinkNum[data.links[i].target + "," + data.links[i].source] = data.links[i].linkindex;
}
else {
mLinkNum[data.links[i].source + "," + data.links[i].target] = data.links[i].linkindex;
}
}
}
}
</script>
var new_json={“nodes”:[{“id”:124587,“name”:“paper1”,“引文”:5,“group”:1},
{“id”:178456,“名称”:“论文2”,“引文”:8,“组”:2}],
“链接”:[{“来源”:124587,“目标”:178456,“名称”:“A-B-1”,“值”:8}];
函数加载图(文本){
var color=d3.scale.category20();
变量数据1={
“节点”:[
{“id”:0,“name”:“paper1”,“引文”:5,“group”:1},
{“id”:1,“name”:“paper2”,“引文”:8,“group”:2},
{“id”:2,“name”:“paper3”,“引文”:12,“group”:3},
{“id”:3,“name”:“paper4”,“引文”:25,“group”:4},
{“id”:4,“name”:“paper5”,“引文”:15,“group”:5},
{“id”:5,“name”:“paper6”,“引文”:5,“group”:1},
{“id”:6,“name”:“paper7”,“引文”:8,“group”:2},
{“id”:7,“name”:“paper8”,“引文”:12,“group”:3},
{“id”:8,“name”:“paper9”,“引文”:25,“group”:4},
{“id”:9,“name”:“paper10”,“引文”:15,“group”:5}
],
“链接”:[
{“源”:0,“目标”:1,“名称”:“A-B-1”,“值”:8},
{“源”:0,“目标”:1,“名称”:“A-B-2”,“值”:24},
{“源”:0,“目标”:2,“名称”:“A-C-1”,“值”:12},
{“源”:0,“目标”:2,“名称”:“A-C-3”,“值”:44},
{“源”:2,“目标”:3,“名称”:“A-D-1”,“值”:11},
{“源”:2,“目标”:3,“名称”:“A-D-2”,“值”:35},
{“源”:2,“目标”:4,“名称”:“A-E-1”,“值”:16},
{“源”:2,“目标”:4,“名称”:“A-E-5”,“值”:30},
{“源”:4,“目标”:5,“名称”:“A-B-1”,“值”:8},
{“源”:4,“目标”:5,“name”:“A-B-2”,“value”:24},
{“源”:5,“目标”:6,“名称”:“A-C-1”,“值”:12},
{“源”:5,“目标”:6,“名称”:“A-C-3”,“值”:44},
{“源”:5,“目标”:7,“名称”:“A-D-1”,“值”:11},
{“源”:5,“目标”:7,“名称”:“A-D-2”,“值”:35},
{“源”:7,“目标”:8,“名称”:“A-E-1”,“值”:16},
{“源”:7,“目标”:8,“名称”:“A-E-5”,“值”:30},
{“源”:8,“目标”:3,“名称”:“A-C-1”,“值”:12},
{“源”:8,“目标”:3,“名称”:“A-C-3”,“值”:44},
{“源”:8,“目标”:9,“名称”:“A-D-1”,“值”:11},
{“源”:8,“目标”:9,“名称”:“A-D-2”,“值”:35}
]
};
//用于存储两个节点之间的链接数。
//mLinkNum[data.links[i].source+,“+data.links[i].target]=data.links[i].linkindex;
var mLinkNum={};
//首先对链接排序
sortLinks();
//设置linkIndex和linkNumer,因为可能有多个链接共享同一个源节点和目标节点
setLinkIndexAndNum();
var w=960,
h=500;
var-force=d3.layout.force()
.节点(d3.值(data1.节点))
.links(数据1.links)
.尺寸([w,h])
.linkDistance(200)
。收费(-300)
.on(“滴答”,滴答)
.start();
var svg=d3.选择(“.graphContainer”).追加(“svg:svg”)
.attr(“宽度”,w)
.attr(“高度”,h);
var path=svg.append(“svg:g”)
.selectAll(“行”)
.data(force.links())
.enter().append(“svg:path”)
.attr(“类”、“链接”)
.style(“笔划宽度”,函数(d){return Math.sqrt(d.value);});
var circle=svg.append(“svg:g”)
.selectAll(“圆圈”)
.data(force.nodes())
.enter().append(“svg:circle”)
.attr(“r”,函数(d){return(d.引文);})
.style(“fill”,函数(d){返回颜色(d.group);})
.呼叫(强制拖动);
var text=svg.append(“svg:g”)
.全选(“g”)
.data(force.nodes())
.enter().append(“svg:g”);
//文本的副本,带有粗白色笔划以便于阅读。
text.append(“svg:text”)
.attr(“x”,8)
.attr(“y”,“.31em”)
.attr(“类”、“阴影”)
.text(函数(d){返回d.name;});
text.append(“svg:text”)
.attr(“x”,8)
.attr(“y”,“.31em”)
.text(函数(d){返回d.name;});
//使用椭圆弧路径段对方向性进行双重编码。
函数tick(){
attr(“d”,函数(d){
变量dx=d.target.x-d.source.x,
dy=d.target.y-d.source.y,
dr=Math.sqrt(dx*dx+dy*dy);
//获取源节点和目标节点之间的链接总数
var lTotalLinkNum=mLinkNum[d.source.id+”,“+d.target.id]| | mLinkNum[d.target.id+”,“+d.source.id];
如果(lTotalLinkNum>
var edges = [];
data.links.forEach(function(e) {
var sourceNode = data.nodes.filter(function(n) {
return n.id === e.source;
})[0],
targetNode = data.nodes.filter(function(n) {
return n.id === e.target;
})[0];
edges.push({
source: sourceNode,
target: targetNode
});
});
force
.nodes(data.nodes)
.links(edges)
var link = svg.selectAll(".link")
.data(edges)