我在使用D3和弦图时遇到了问题。
https://jsfiddle.net/Nyquist212/3vc0f2e5/6/
它使用了Steve Halls出色的Chord Mapper功能。
http://www.delimited.io/blog/2013/12/8/chord-diagrams-in-d3
虽然我过去取得了成功，但我收到此错误表明我的数据存在问题（？）。
错误：属性d：预期数字，＆＃34; ... 666666669 0 1,1 NaN时，NaNLNaN，NANA ...＆＃34;
有人可以帮助我理解我可能做错了吗？
var data = [
{
"count": 1,
"source": "6540",
"target": "1030"
},
{
"count": 1,
"source": "6263",
"target": "727"
},
{
"count": 1,
"source": "16760",
"target": "3085"
},
{
"count": 1,
"source": "7518",
"target": "2035"
},
{
"count": 1,
"source": "5512",
"target": "1560"
},
{
"count": 1,
"source": "16239",
"target": "3135"
},
{
"count": 1,
"source": "116528",
"target": "4130"
},
{
"count": 1,
"source": "14060M",
"target": "3130"
},
{
"count": 1,
"source": "6264",
"target": "727"
},
{
"count": 1,
"source": "6265",
"target": "727"
},
{
"count": 1,
"source": "6542",
"target": "1036"
},
{
"count": 1,
"source": "16018",
"target": "3035"
},
{
"count": 1,
"source": "116619LB",
"target": "3135"
},
{
"count": 1,
"source": "116400",
"target": "3130"
},
{
"count": 1,
"source": "5501",
"target": "1530"
},
{
"count": 1,
"source": "6542",
"target": "1065"
},
{
"count": 1,
"source": "1016",
"target": "1560"
},
{
"count": 1,
"source": "6262",
"target": "727"
},
{
"count": 1,
"source": "16520",
"target": "4030"
},
{
"count": 1,
"source": "6517",
"target": "1166"
},
{
"count": 1,
"source": "16528",
"target": "4030"
},
{
"count": 1,
"source": "116518",
"target": "4130"
},
{
"count": 1,
"source": "5514",
"target": "1520"
},
{
"count": 1,
"source": "6827",
"target": "2035"
},
{
"count": 1,
"source": "5508",
"target": "1530"
},
{
"count": 1,
"source": "16515",
"target": "4030"
},
{
"count": 1,
"source": "5510",
"target": "1530"
},
{
"count": 1,
"source": "114234",
"target": "2235"
},
{
"count": 1,
"source": "16238",
"target": "3135"
},
{
"count": 1,
"source": "5517",
"target": "1520"
},
{
"count": 1,
"source": "1675",
"target": "1565"
},
{
"count": 1,
"source": "14000",
"target": "3000"
},
{
"count": 1,
"source": "1804",
"target": "1556"
},
{
"count": 1,
"source": "114200",
"target": "2235"
},
{
"count": 1,
"source": "16713",
"target": "3185"
},
{
"count": 1,
"source": "1675",
"target": "1575"
},
{
"count": 1,
"source": "116589",
"target": "4130"
},
{
"count": 1,
"source": "6917",
"target": "2035"
},
{
"count": 1,
"source": "1678",
"target": "1565"
},
{
"count": 1,
"source": "16250",
"target": "3135"
},
{
"count": 1,
"source": "6916",
"target": "2035"
},
{
"count": 1,
"source": "6538A",
"target": "1030"
},
{
"count": 1,
"source": "6604",
"target": "1065"
},
{
"count": 1,
"source": "16750",
"target": "3075"
},
{
"count": 1,
"source": "16000",
"target": "3035"
},
{
"count": 1,
"source": "16014",
"target": "3035"
},
{
"count": 1,
"source": "16700",
"target": "3175"
},
{
"count": 1,
"source": "16550",
"target": "3085"
},
{
"count": 1,
"source": "1655",
"target": "1575"
},
{
"count": 1,
"source": "116523",
"target": "4130"
},
{
"count": 1,
"source": "116598",
"target": "4130"
},
{
"count": 1,
"source": "6824",
"target": "2035"
},
{
"count": 1,
"source": "6610",
"target": "1030"
},
{
"count": 1,
"source": "6241",
"target": "645"
},
{
"count": 1,
"source": "16518",
"target": "4030"
},
{
"count": 1,
"source": "16523",
"target": "4030"
},
{
"count": 1,
"source": "1803",
"target": "1556"
},
{
"count": 1,
"source": "1673",
"target": "1575"
}
];
var mpr = chordMpr(data);
mpr
.addValuesToMap('source')
.setFilter(function (row, a, b) {
return(row.source == a.name && row.target == b.name);
})
.setAccessor(function (recs, a, b) {
if(!recs[0]) return 0;
return +recs[0].count ;
});
drawChords(mpr.getMatrix(), mpr.getMap());
function drawChords (matrix, mmap) {
var w = 950, h = 950, r1 = h / 3, r0 = r1 - 150;
var fill = d3.scale.category20();
var chord = d3.layout.chord()
.padding(.02) // Padding between arc categories
.sortSubgroups(d3.descending)
.sortChords(d3.descending);
var arc = d3.svg.arc()
.innerRadius(r0)
.outerRadius(r0 + 40); // Thickness of arc category
var svg = d3.select("#chord") // Attach to the div element
.append("svg:svg")
.attr("width", w)
.attr("height", h)
.append("svg:g")
.attr("id", "circle")
.attr("transform", "translate(" + w / 2 + "," + h / 2 + ")");
svg.append("circle").attr("r", r0 + 50);
var rdr = chordRdr(matrix, mmap);
chord.matrix(matrix);
var g = svg.selectAll("g.group")
.data(chord.groups())
.enter().append("svg:g")
.attr("class", "group")
g.append("svg:path")
.style("stroke", "black")
.style("fill", function(d) { return fill(d.index); })
.attr("d", arc);
var chordPaths = svg.selectAll("path.chord")
.data(chord.chords())
.enter().append("svg:path")
.attr("class", "chord")
.style("stroke", function(d) { return d3.rgb(fill(d.target.index)).darker(); })
.style("fill", function(d) { return fill(d.target.index); })
.attr("d", d3.svg.chord().radius(r0))
};
// blog-post - http://www.delimited.io/blog/2013/12/8/chord-diagrams-in-d3
//*******************************************************************
// CHORD MAPPER
//*******************************************************************
function chordMpr (data) {
var mpr = {}, mmap = {}, n = 0,
matrix = [], filter, accessor;
mpr.setFilter = function (fun) {
filter = fun;
return this;
},
mpr.setAccessor = function (fun) {
accessor = fun;
return this;
},
mpr.getMatrix = function () {
matrix = [];
_.each(mmap, function (a) {
if (!matrix[a.id]) matrix[a.id] = [];
_.each(mmap, function (b) {
var recs = _.filter(data, function (row) {
return filter(row, a, b);
})
matrix[a.id][b.id] = accessor(recs, a, b);
});
});
return matrix;
},
mpr.getMap = function () {
return mmap;
},
mpr.printMatrix = function () {
_.each(matrix, function (elem) {
console.log(elem);
})
},
mpr.addToMap = function (value, info) {
if (!mmap[value]) {
mmap[value] = { name: value, id: n++, data: info }
}
},
mpr.addValuesToMap = function (varName, info) {
var values = _.uniq(_.pluck(data, varName));
_.map(values, function (v) {
if (!mmap[v]) {
mmap[v] = { name: v, id: n++, data: info }
}
});
return this;
}
return mpr;
}
//*******************************************************************
// CHORD READER
//*******************************************************************
function chordRdr (matrix, mmap) {
return function (d) {
var i,j,s,t,g,m = {};
if (d.source) {
i = d.source.index; j = d.target.index;
s = _.where(mmap, {id: i });
t = _.where(mmap, {id: j });
m.sname = s[0].name;
m.sdata = d.source.value;
m.svalue = +d.source.value;
m.stotal = _.reduce(matrix[i], function (k, n) { return k + n }, 0);
m.tname = t[0].name;
m.tdata = d.target.value;
m.tvalue = +d.target.value;
m.ttotal = _.reduce(matrix[j], function (k, n) { return k + n }, 0);
} else {
g = _.where(mmap, {id: d.index });
m.gname = g[0].name;
m.gdata = g[0].data;
m.gvalue = d.value;
}
m.mtotal = _.reduce(matrix, function (m1, n1) {
return m1 + _.reduce(n1, function (m2, n2) { return m2 + n2}, 0);
}, 0);
return m;
}
}
答案 0 :(得分：0)
源和目标ID是互斥的（即没有源是目标，没有目标是源），并且您只是添加源的值，因此当布局算法查找任何目标时，它返回null并且最终在布局中作为NaN进行级联。
通过添加目标来解决：
.addValuesToMap('source')
.addValuesToMap('target')
问题是和弦图是否最好显示二分图，但似乎确实将两组保持在一起（可能只是因为它们是单独添加的）