我有一个D3 (v3.4)边缘捆绑图表，我想通过点击一个'更新'按钮更新一个新的数据集的图表。我希望看到图表更新显示来自data2的数据。Json(而不是data1.json)。我目前有一个更新按钮和一个updateData()函数的开始，它只是在新的数据集中读取，尽管我不确定我需要在这个函数中包含哪些部分的代码来通过转换更新。我知道图表的某些部分需要重新渲染，这不是简单地加载新数据集的情况。我使用这个更新d3.js数据与按钮按下的例子作为基础，虽然，因为它是一个折线图，过渡更新是简单得多，所以不太有助于我的边缘捆绑图。我下面的代码代表了一个最小的可复制示例。
HTML/JS
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<script type='text/javascript' src='https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js'></script>
<script src="https://d3js.org/d3.v4.js"></script>
<style>
.node {
font: 300 11px "Helvetica Neue", Helvetica, Arial, sans-serif;
fill: rgb(0, 0, 0, .6);
}
.link {
stroke: steelblue;
fill: none;
pointer-events: none;
}
</style>
</head>
<body>
<div class="grid-container"></div>
<div class="grid-item" id="chart">
<div id="my_dataviz"></div>
<script>
var diameter = 760,
radius = diameter / 2;
innerRadius = radius - 160;
var cluster = d3.cluster()
.size([360, innerRadius]);
var line = d3.radialLine()
.curve(d3.curveBundle.beta(0.85))
.radius(function(d) { return d.y; })
.angle(function(d) { return d.x / 180 * Math.PI; });
var svg = d3.select("body").append("svg")
.attr("width", diameter)
.attr("height", diameter)
.append("g")
.attr("transform", "translate(" + radius + "," + radius + ")");
var link = svg.append("g").selectAll(".link"),
node = svg.append("g").selectAll(".node");
d3.json("data1.json", function(error, classes) {
if (error) throw error;
var root = packageHierarchy(classes)
.sum(function(d) { return d.size; });
cluster(root);
link = link
.data(packageImports(root.leaves()))
.enter().append("path")
.each(function(d) { d.source = d[0], d.target = d[d.length - 1]; })
.attr("class", "link")
.attr("d", line);
node = node
.data(root.leaves())
.enter().append("text")
.attr("class", "node")
.attr("dy", "0.31em")
.attr("transform", function(d) { return "rotate(" + (d.x - 90) + ")translate(" + (d.y + 8) + ",0)" + (d.x < 180 ? "" : "rotate(180)"); })
.attr("text-anchor", function(d) { return d.x < 180 ? "start" : "end"; })
.text(function(d) { return d.data.key; })
.on("mouseover", mouseovered)
.on("mouseout", mouseouted);
});
function mouseovered(d) {
node
.each(function(n) { n.target = n.source = false; });
link
.classed("link--target", function(l) { if (l.target === d) return l.source.source = true; })
.classed("link--source", function(l) { if (l.source === d) return l.target.target = true; })
.filter(function(l) { return l.target === d || l.source === d; })
.raise();
node
.classed("node--target", function(n) { return n.target; })
.classed("node--source", function(n) { return n.source; });
}
function mouseouted(d) {
link
.classed("link--target", false)
.classed("link--source", false);
node
.classed("node--target", false)
.classed("node--source", false);
}
// Lazily construct the package hierarchy from class names.
function packageHierarchy(classes) {
var map = {};
function find(name, data) {
var node = map[name], i;
if (!node) {
node = map[name] = data || {name: name, children: []};
if (name.length) {
node.parent = find(name.substring(0, i = name.lastIndexOf(".")));
node.parent.children.push(node);
node.key = name.substring(i + 1);
}
}
return node;
}
classes.forEach(function(d) {
find(d.name, d);
});
return d3.hierarchy(map[""]);
}
// Return a list of imports for the given array of nodes.
function packageImports(nodes) {
var map = {},
imports = [];
// Compute a map from name to node.
nodes.forEach(function(d) {
map[d.data.name] = d;
});
// For each import, construct a link from the source to target node.
nodes.forEach(function(d) {
if (d.data.imports) d.data.imports.forEach(function(i) {
imports.push(map[d.data.name].path(map[i]));
});
});
return imports;
}
// update data function
function updateData() {
d3.json("data1.json", function(error, classes) {
if (error) throw error;
var root = packageHierarchy(classes)
.sum(function(d) { return d.size; });
var svg = d3.select("body").transition();
});
}
</script>
</div>
</div>
</body>
<div id="option">
<input name="updateButton"
type="button"
value="Update"
onclick="updateData()"
/>
</div>
</html>
data1.json
[
{
"name": "flare.A.dataA",
"imports": [
"flare.B.dataB"
]
},
{
"name": "flare.B.dataB",
"imports": [
"flare.A.dataA"
]
}
]
data2.json
[
{
"name": "flare.A.newdataA",
"imports": [
"flare.B.newdataB"
]
},
{
"name": "flare.B.newdataB",
"imports": [
"flare.A.newdataA"
]
}
]
我找不到任何带有更新按钮的边缘包图表的例子。任何帮助都是感激的!
我试着编辑你的代码，并能够实现这一点。为了更新数据，我们需要使用enter、update和exit方法。我记得在v3中，当我们输入新数据时，这将创建任何缺失的链接或节点，并使用exit()，我们可以删除不存在的节点或链接。输入后，我们添加新的节点、链接，然后更新其属性。实际上我们可以使用相同的函数来创建和更新，你可以尝试一下。我不知道为什么newdata没有在下面的函数中作为节点。我的样本数据似乎有问题。您的新示例数据与下面的代码工作良好。
var diameter = 760,
radius = diameter / 2;
innerRadius = radius - 160;
var cluster = d3.cluster()
.size([360, innerRadius]);
var line = d3.radialLine()
.curve(d3.curveBundle.beta(0.85))
.radius(function(d) {
return d.y;
})
.angle(function(d) {
return d.x / 180 * Math.PI;
});
var svg = d3.select("body").append("svg")
.attr("width", diameter)
.attr("height", diameter)
.append("g")
.attr("transform", "translate(" + radius + "," + radius + ")");
var link = svg.append("g").selectAll(".link"),
node = svg.append("g").selectAll(".node");
switchData(1);
function mouseovered(d) {
node
.each(function(n) {
n.target = n.source = false;
});
link
.classed("link--target", function(l) {
if (l.target === d) return l.source.source = true;
})
.classed("link--source", function(l) {
if (l.source === d) return l.target.target = true;
})
.filter(function(l) {
return l.target === d || l.source === d;
})
.raise();
node
.classed("node--target", function(n) {
return n.target;
})
.classed("node--source", function(n) {
return n.source;
});
}
function mouseouted(d) {
link
.classed("link--target", false)
.classed("link--source", false);
node
.classed("node--target", false)
.classed("node--source", false);
}
// Lazily construct the package hierarchy from class names.
function packageHierarchy(classes) {
var map = {};
function find(name, data) {
var node = map[name],
i;
if (!node) {
node = map[name] = data || {
name: name,
children: []
};
if (name.length) {
node.parent = find(name.substring(0, i = name.lastIndexOf(".")));
node.parent.children.push(node);
node.key = name.substring(i + 1);
}
}
return node;
}
classes.forEach(function(d) {
find(d.name, d);
});
return d3.hierarchy(map[""]);
}
// Return a list of imports for the given array of nodes.
function packageImports(nodes) {
var map = {},
imports = [];
// Compute a map from name to node.
nodes.forEach(function(d) {
map[d.data.name] = d;
});
// For each import, construct a link from the source to target node.
nodes.forEach(function(d) {
if (d.data.imports) d.data.imports.forEach(function(i) {
imports.push(map[d.data.name].path(map[i]));
});
});
return imports;
}
// update data function
function updateData(classes) {
var root = packageHierarchy(classes);
cluster(root);
var nodes = root.leaves();
var links = packageImports(root.leaves());
let link = svg.selectAll('.link').data(links);
link.enter().append("g")
.attr("class", "link").append("path").each(function(d) {
d.source = d[0], d.target = d[d.length - 1];
});
svg.selectAll('path').attr("class", "link").transition()
.duration(1000).attr("d", line);
link.exit().remove();
let node = svg.selectAll('.node').data(nodes);
node.enter().append('g').append("text");
svg.selectAll('text').attr("transform", function(d) {
return "rotate(" + (d.x - 90) + ")translate(" + (d.y + 8) + ",0)" + (d.x < 180 ? "" : "rotate(180)");
})
.attr("text-anchor", function(d) {
return d.x < 180 ? "start" : "end";
})
.attr("class", "node")
.attr("dy", ".31em")
.text(function(d) {
return d.data.key;
});
node.exit().remove();
}
function switchData(dataset) {
let classes = [];
if (dataset == 0) {
classes = [{
"name": "flare.A.newdataA",
"size": 1000,
"imports": [
"flare.B.newdataB"
]
},
{
"name": "flare.B.newdataB",
"size": 1400,
"imports": [
"flare.A.newdataA"
]
},
{
"name": "flare.A.newdataC",
"size": 1200,
"imports": [
"flare.A.newdataA", "flare.B.newdataB"
]
}
];
} else
{
classes = [{
"name": "flare.A.dataA",
"size": 1000,
"imports": [
"flare.B.dataB"
]
},
{
"name": "flare.B.dataB",
"size": 1200,
"imports": [
"flare.A.dataA"
]
}
];
}
updateData(classes)
}<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<script type='text/javascript' src='https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js'></script>
<script src="https://d3js.org/d3.v5.js"></script>
<style>
.node {
font: 300 11px "Helvetica Neue", Helvetica, Arial, sans-serif;
fill: rgb(0, 0, 0, .6);
}
.link {
stroke: steelblue;
fill: none;
pointer-events: none;
}
</style>
</head>
<body>
<div class="grid-container"></div>
<div class="grid-item" id="chart">
<div id="my_dataviz"></div>
</div>
</div>
</body>
<div id="option">
<input name="updateButton" type="button" value="Update" onclick="switchData(0)" />
</div>
<div id="option">
<input name="updateButton" type="button" value="SwitchBack" onclick="switchData(1)" />
</div>
</html>试试这个:
transition().duration(1000) .ease("elastic") .call(draw);
from D3 transitions on enter/update/remove
也
D3.js update with transition