请求帮助。
我正在尝试更改Sankey图中的代码。 1.我必须将链接颜色更改为红色,链接值大于30。 2.将节点咨询移向节点的最后一节,并在第3节点线之前推送最后2个节点(咨询(技术和策略))。
我当前的代码显示带有灰线的Sankey图。
var svg = d3.select("svg").attr("style", "outline: thin solid grey;"),
width = +svg.attr("width"),
height = +svg.attr("height");
var formatNumber = d3.format(",.0f"),
format = function(d) { return formatNumber(d) + " TWh"; },
color = d3.scaleOrdinal(d3.schemeCategory10);
var school = {"nodes": [
{"name":"High School"}, // 0
{"name":"Community College"}, // 1
{"name":"Finance"}, // 2
{"name":"Accounting"}, // 3
{"name":"ITS"}, // 4
{"name":"Marketing"}, // 5
{"name":"Analytics"}, // 6
{"name":"Security"}, // 7
{"name":"Consulting"}, // 8
{"name":"Banking"}, // 9
{"name":"Internal"}, // 10
{"name":"Securities"}, // 11
{"name":"Public"}, // 12
{"name":"Audting"}, // 13
{"name":"Internal"}, // 14
{"name":"Retail"}, // 15
{"name":"Technology"}, // 16
{"name":"Strategy"} // 17
],
"links":[
// FirstYear
{"source":0,"target":2,"value":33},
{"source":0,"target":3,"value":42},
{"source":0,"target":4,"value":74},
{"source":0,"target":5,"value":60},
// Community College
{"source":1,"target":2,"value":7},
{"source":1,"target":3,"value":13},
{"source":1,"target":4,"value":11},
{"source":1,"target":5,"value":9},
// Finance
{"source":2,"target":9,"value":16},
{"source":2,"target":10,"value":14},
{"source":2,"target":11,"value":10},
// Accounting
{"source":3,"target":12,"value":20},
{"source":3,"target":13,"value":12},
{"source":3,"target":7,"value":8},
{"source":3,"target":14,"value":15},
// Marketing
{"source":5,"target":6,"value":30},
{"source":5,"target":15,"value":39},
// ITS
{"source":4,"target":6,"value":40},
{"source":4,"target":7,"value":20},
{"source":4,"target":12,"value":6},
{"source":4,"target":8,"value":19},
// ITS Consulting
{"source":8,"target":16,"value":10},
{"source":8,"target":17,"value":9},
]};
var sankey = d3.sankey()
.nodeWidth(15)
.nodePadding(10)
.extent([[1, 1], [width - 1, height - 6]]);
var link = svg.append("g")
.attr("class", "links")
.attr("fill", "none")
.attr("stroke", "#000")// if changed to red, Changes fill of all the nodes to red.
.attr("stroke-opacity", 0.2)
.selectAll("path");
var node = svg.append("g")
.attr("class", "nodes")
.attr("font-family", "sans-serif")
.attr("font-size", 10)
.selectAll("g");
sankey(school);
link = link
.data(school.links)
.enter().append("path")
.attr("d", d3.sankeyLinkHorizontal())
.attr("stroke-width", function(d) { return Math.max(1, d.width); });
// link hover values
link.append("title")
.text(function(d) { return d.source.name + " → " + d.target.name + "\n" + format(d.value); });
node = node
.data(school.nodes)
.enter().append("g");
node.append("rect")
.attr("x", function(d) { return d.x0; })
.attr("y", function(d) { return d.y0; })
.attr("height", function(d) { return d.y1 - d.y0; })
.attr("width", function(d) { return d.x1 - d.x0; })
.attr("fill", function(d) { return color(d.name.replace(/ .*/, "")); })
.attr("stroke", "#000");
node.append("text")
.attr("x", function(d) { return d.x0 - 6; })
.attr("y", function(d) { return (d.y1 + d.y0) / 2; })
.attr("dy", "0.35em")
.attr("text-anchor", "end")
.text(function(d) { return d.name; })
.filter(function(d) { return d.x0 < width / 2; })
.attr("x", function(d) { return d.x1 + 6; })
.attr("text-anchor", "start");
我想要的输出是这样的: enter image description here
答案 0 :(得分:0)
您已对链接颜色进行了硬编码,只需将其移动到您操作数据的位置即可动态选择
var link = svg.append("g")
.attr("class", "links")
.attr("fill", "none")
.attr("stroke-opacity", 0.2)
.selectAll("path");
...
link = link
.data(school.links)
.enter().append("path")
.attr("d", d3.sankeyLinkHorizontal())
.attr("stroke", function(d) { return d.value > 30 ? "#F00" : "#000"}) //<--- new location of the stroke
.attr("stroke-width", function(d) { return Math.max(1, d.width); });
您还可以为sankey图指定对齐策略
var sankey = d3.sankey()
.nodeWidth(15)
.nodePadding(10)
.nodeAlign(d3.sankeyLeft)
.extent([[1, 1], [width - 1, height - 6]]);
这似乎符合您的要求。见this codepen