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我是 D3.js 的新手。请注意,正在使用版本 4。
(很多来自 here ):
<!DOCTYPE html>
<meta charset="UTF-8">
<style>
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
</style>
<body>
<!-- load the d3.js library -->
<script src="d3.js"></script>
<script>
var treeData =
{
"name": "File 1",
"children": [
{
"name": "File 2",
"children": [
{ "name": "File 3",
"subprocess": [
{"name": "File 4"}],
"children" : [
{ "name": "File 5" } ]
},
]
}
]
};
// Set the dimensions and margins of the diagram
var margin = {top: 0, right: 90, bottom: 30, left: 25},
width = 800 - margin.left - margin.right,
height = 200 - margin.top - margin.bottom;
// append the svg object to the body of the page
// appends a 'group' element to 'svg'
// moves the 'group' element to the top left margin
var svg = d3.select("body").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate("
+ margin.left + "," + margin.top + ")");
var i = 0,
duration = 750, // time between transitions (interaction)
root;
// declares a tree layout and assigns the size
var treemap = d3.tree().size([height, width]);
// Assigns parent, children, height, depth
root = d3.hierarchy(treeData, function(d) { return d.children; });
root.x0 = 0;
root.y0 = 0;
console.log(root);
// Collapse after the second level
root.children.forEach(collapse);
update(root);
// Collapse the node and all it's children
function collapse(d) {
if(d.children) {
d._children = d.children
d._children.forEach(collapse)
d.children = null
}
}
function update(source) {
// Assigns the x and y position for the nodes
var treeData = treemap(root);
console.log(treeData.descendants());
// Compute the new tree layout.
var nodes = treeData.descendants(),
links = treeData.descendants().slice(1);
// Normalize for fixed-depth.
nodes.forEach(function(d){ d.y = d.depth * 180});
// ****************** Nodes section ***************************
// Update the nodes...
var node = svg.selectAll('g.node')
.data(nodes, function(d) {return d.id || (d.id = ++i); });
// Enter any new modes at the parent's previous position.
var nodeEnter = node.enter().append('g')
.attr('class', 'node')
.attr("transform", function(d) {
return "translate(" + source.y0 + "," + source.x0 + ")";
})
.on('click', click);
// Add Circle for the nodes
nodeEnter.append('circle')
.attr('class', 'node')
.attr('r', 1e-6)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
});
// Add labels for the nodes
nodeEnter.append('text')
.attr("dy", "2em")
.attr("x", function(d) {
return d.children || d._children ? 13 : 13;
})
.attr("text-anchor", function(d) {
return d.children || d._children ? "start" : "start";
})
.text(function(d) { return d.data.name; });
// UPDATE
var nodeUpdate = nodeEnter.merge(node);
// Transition to the proper position for the node
nodeUpdate.transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + d.y + "," + d.x + ")";
});
// Update the node attributes and style
nodeUpdate.select('circle.node')
.attr('r', 10)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
})
.attr('cursor', 'pointer');
// Remove any exiting nodes
var nodeExit = node.exit().transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + source.y + "," + source.x + ")";
})
.remove();
// On exit reduce the node circles size to 0
nodeExit.select('circle')
.attr('r', 1e-6);
// On exit reduce the opacity of text labels
nodeExit.select('text')
.style('fill-opacity', 1e-6);
// ****************** links section ***************************
// Update the links...
var link = svg.selectAll('path.link')
.data(links, function(d) { return d.id; });
// Enter any new links at the parent's previous position.
var linkEnter = link.enter().insert('path', "g")
.attr("class", "link")
.attr('d', function(d){
var o = {x: source.x0, y: source.y0}
return diagonal(o, o)
});
// UPDATE
var linkUpdate = linkEnter.merge(link);
// Transition back to the parent element position
linkUpdate.transition()
.duration(duration)
.attr('d', function(d){ return diagonal(d, d.parent) });
// Remove any exiting links
var linkExit = link.exit().transition()
.duration(duration)
.attr('d', function(d) {
var o = {x: source.x, y: source.y}
return diagonal(o, o)
})
.remove();
// Store the old positions for transition.
nodes.forEach(function(d){
d.x0 = d.x;
d.y0 = d.y;
});
// Creates a curved (diagonal) path from parent to the child nodes
function diagonal(s, d) {
path = `M ${s.y} ${s.x}
L ${d.y} ${d.x}`;
return path;
}
// Toggle children on click.
function click(d) {
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
}
</script>
</body>
期望的输出:
字体不完全相同,但我希望思路清晰:本质上,我想创建箭头并让 File 4 显示如上。我可能错误地格式化了 JSON
;如果是这种情况,请告诉我它应该是最好的格式。
一般来说,每个(第一级)child
应该指向右边,每个 subprocess
应该指向下面,任何包含的 child
在 subprocess
中也应该指向下方。
最佳答案
新答案
昨晚想到这个,我决定我天真的方法是黑化和蛮力。问题在于,通过引入第二个子数组(子进程数组)并直接放置这些节点,您失去了 d3.tree
的魔力。您失去了处理父/子关系和确定链接结构的能力。相反,我建议您保留单个子数组并将它们标记为具有附加属性的子进程。数据结构如下所示:
var treeData = {
"name": "File 1",
"children": [{
"name": "File 2",
"children": [{
"name": "File 3",
"children": [{
"name": "File 5"
}, {
"name": "File 4",
"type": "subprocess", //<-- this is a subprocess with children
"children": [{
"name": "File 6"
}]
}]
}]
}]
};
然后你预处理数据以确定子进程节点在哪个深度;与 d3.tree
标记特定深度的节点的方式非常相似。
root.data['depthToSub'] = 0;
isChildOfProcess(root.children, 0);
// Collapse after the second level
root.children.forEach(collapse);
function isChildOfProcess(children, depth) {
children.forEach(function(d) {
d.data['depthToSub'] = depth;
if (d.data.type && d.data.type === "subprocess") {
d.data['depthToSub'] = 1;
isChildOfProcess(d.children, 2);
} else if (depth > 0 && d.children) {
isChildOfProcess(d.children, ++depth);
} else if (d.children) {
isChildOfProcess(d.children, 0);
}
})
}
在此处理之后,您可以“修复”d3.tree
生成的坐标以创建您的直 Angular 结构:
nodes.forEach(function(d) {
d.y = d.depth * 180;
if (d.parent) {
d.x = d.parent.x;
}
if (d.data.depthToSub) {
d.y = d.parent.y;
d.x = (d.data.depthToSub * nodes[0].x) + nodes[0].x;
}
});
然后绘图只使用您之前使用的相同代码。这是一个正在运行的示例:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<script data-require="d3@4.0.0" data-semver="4.0.0" src="https://d3js.org/d3.v4.min.js"></script>
<style>
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
.arrow {
fill: none;
stroke: #ccc;
stroke-width: 1px;
}
</style>
</head>
<body>
<script>
var treeData = {
"name": "File 1",
"children": [{
"name": "File 2",
"children": [{
"name": "File 3",
"children": [{
"name": "File 5"
}, {
"name": "File 4",
"type": "subprocess",
"children": [{
"name": "File 6",
"children": [{
"name": "File 7"
}]
}]
}]
}]
}]
};
// Set the dimensions and margins of the diagram
var margin = {
top: 0,
right: 90,
bottom: 30,
left: 25
},
width = 800 - margin.left - margin.right,
height = 800 - margin.top - margin.bottom;
// append the svg object to the body of the page
// appends a 'group' element to 'svg'
// moves the 'group' element to the top left margin
var svg = d3.select("body").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var defs = svg.append("defs");
defs
.append("marker")
.attr("id", "arrow")
.attr("class", "arrow")
.attr("viewBox", "0 -4 10 10")
.attr("refX", 12)
.attr("refY", 0)
.attr("markerWidth", 12)
.attr("markerHeight", 12)
.attr("orient", "auto")
.append("path")
.attr("d", "M0,-4L8,0L0,4");
var i = 0,
duration = 750, // time between transitions (interaction)
root;
// declares a tree layout and assigns the size
var treemap = d3.tree().size([200, width]);
// Assigns parent, children, height, depth
root = d3.hierarchy(treeData, function(d) {
return d.children;
});
root.x0 = 0;
root.y0 = 0;
root.data['depthToSub'] = 0;
isChildOfProcess(root.children, 0);
// Collapse after the second level
root.children.forEach(collapse);
function isChildOfProcess(children, depth) {
children.forEach(function(d) {
d.data['depthToSub'] = depth;
if (d.data.type && d.data.type === "subprocess") {
d.data['depthToSub'] = 1;
isChildOfProcess(d.children, 2);
} else if (depth > 0 && d.children) {
isChildOfProcess(d.children, ++depth);
} else if (d.children) {
isChildOfProcess(d.children, 0);
}
})
}
// Collapse after the second level
root.children.forEach(collapse);
update(root);
// Collapse the node and all it's children
function collapse(d) {
if (d.children) {
d._children = d.children
d._children.forEach(collapse)
d.children = null
}
}
function update(source) {
// Assigns the x and y position for the nodes
var treeData = treemap(root);
// Compute the new tree layout.
var nodes = treeData.descendants(),
links = treeData.descendants().slice(1);
nodes.forEach(function(d) {
d.y = d.depth * 180;
if (d.parent) {
d.x = d.parent.x;
}
if (d.data.depthToSub) {
d.y = d.parent.y;
d.x = (d.data.depthToSub * nodes[0].x) + nodes[0].x;
}
});
// ****************** Nodes section ***************************
// Update the nodes...
var node = svg.selectAll('g.node')
.data(nodes, function(d) {
return d.id || (d.id = ++i);
});
// Enter any new modes at the parent's previous position.
var nodeEnter = node.enter().append('g')
.attr('class', 'node')
.attr("transform", function(d) {
return "translate(" + source.y0 + "," + source.x0 + ")";
})
.on('click', click);
// Add Circle for the nodes
nodeEnter.append('circle')
.attr('class', 'node')
.attr('r', 1e-6)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
});
// Add labels for the nodes
nodeEnter.append('text')
.attr("dy", "2em")
.attr("x", function(d) {
return d.children || d._children ? 13 : 13;
})
.attr("text-anchor", function(d) {
return d.children || d._children ? "start" : "start";
})
.text(function(d) {
return d.data.name;
});
// UPDATE
var nodeUpdate = nodeEnter.merge(node);
// Transition to the proper position for the node
nodeUpdate.transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + d.y + "," + d.x + ")";
});
// Update the node attributes and style
nodeUpdate.select('circle.node')
.attr('r', 10)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
})
.attr('cursor', 'pointer');
// Remove any exiting nodes
var nodeExit = node.exit().transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + source.y + "," + source.x + ")";
})
.remove();
// On exit reduce the node circles size to 0
nodeExit.select('circle')
.attr('r', 1e-6);
// On exit reduce the opacity of text labels
nodeExit.select('text')
.style('fill-opacity', 1e-6);
// ****************** links section ***************************
// Update the links...
var link = svg.selectAll('path.link')
.data(links, function(d) {
return d.id;
});
// Enter any new links at the parent's previous position.
var linkEnter = link.enter().insert('path', "g")
.attr("class", "link")
.attr('d', function(d) {
var o = {
x: source.x0,
y: source.y0
}
return diagonal(o, o)
})
.attr("marker-end", function(d) {
return "url(#arrow)";
});
// UPDATE
var linkUpdate = linkEnter.merge(link);
// Transition back to the parent element position
linkUpdate.transition()
.duration(duration)
.attr('d', function(d) {
return diagonal(d, d.parent)
});
// Remove any exiting links
var linkExit = link.exit().transition()
.duration(duration)
.attr('d', function(d) {
var o = {
x: source.x,
y: source.y
}
return diagonal(o, o)
})
.remove();
// Store the old positions for transition.
nodes.forEach(function(d) {
d.x0 = d.x;
d.y0 = d.y;
});
// Creates a curved (diagonal) path from parent to the child nodes
function diagonal(s, d) {
path = `M ${d.y} ${d.x}
L ${s.y} ${s.x}`;
return path;
}
// Toggle children on click.
function click(d) {
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
}
</script>
</body>
</html>
旧答案
天真的做法是检查每个进入的节点,看看它是否有一个子进程,然后在那个时候添加额外的元素:
nodeEnter.each(function(d){
if (d.data.subprocess){
var sp = d3.select(this).append('g')
.datum(d)
.attr('class','subprocess');
sp.append('path')
.attr('d', 'M0,' + (-d.x - subProcessDist) + 'L0,0')
.style('stroke', '#ccc')
.style('stroke-width', '2px')
.attr("marker-end", function(d) {
return "url(#arrow)";
});
sp.append('circle')
.attr('r', 1e-6)
.style('fill', '#fff');
sp.append('text')
.attr('x', 13)
.style('text-anchor', 'start')
.text(function(d){
return d.data.subprocess[0].name;
});
}
});
可以使用显示的常规标记方法添加箭头 here .
var defs = svg.append("defs");
defs
.append("marker")
.attr("id", "arrow")
.attr("class", "arrow")
.attr("viewBox", "0 -4 10 10")
.attr("refX", 12)
.attr("refY", 0)
.attr("markerWidth", 12)
.attr("markerHeight", 12)
.attr("orient", "auto")
.append("path")
.attr("d", "M0,-4L8,0L0,4");
...
// Enter any new links at the parent's previous position.
var linkEnter = link.enter().insert('path', "g")
.attr("class", "link")
.attr('d', function(d) {
var o = {
x: source.x0,
y: source.y0
}
return diagonal(o, o)
})
.attr("marker-end", function(d) {
return "url(#arrow)";
});
这里是完整的运行代码,包含这些更改和其他将它们放在一起的代码:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<script data-require="d3@4.0.0" data-semver="4.0.0" src="https://d3js.org/d3.v4.min.js"></script>
<style>
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
.arrow{
fill: none;
stroke: #ccc;
stroke-width: 1px;
}
</style>
</head>
<body>
<script>
var subProcessDist = 15;
var treeData = {
"name": "File 1",
"children": [{
"name": "File 2",
"children": [{
"name": "File 3",
"subprocess": [{
"name": "File 4"
}],
"children": [{
"name": "File 5"
}]
}, ]
}]
};
// Set the dimensions and margins of the diagram
var margin = {
top: 0,
right: 90,
bottom: 30,
left: 25
},
width = 800 - margin.left - margin.right,
height = 200 - margin.top - margin.bottom;
// append the svg object to the body of the page
// appends a 'group' element to 'svg'
// moves the 'group' element to the top left margin
var svg = d3.select("body").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var defs = svg.append("defs");
defs
.append("marker")
.attr("id", "arrow")
.attr("class", "arrow")
.attr("viewBox", "0 -4 10 10")
.attr("refX", 12)
.attr("refY", 0)
.attr("markerWidth", 12)
.attr("markerHeight", 12)
.attr("orient", "auto")
.append("path")
.attr("d", "M0,-4L8,0L0,4");
var i = 0,
duration = 750, // time between transitions (interaction)
root;
// declares a tree layout and assigns the size
var treemap = d3.tree().size([height, width]);
// Assigns parent, children, height, depth
root = d3.hierarchy(treeData, function(d) {
return d.children;
});
root.x0 = 0;
root.y0 = 0;
//console.log(root);
// Collapse after the second level
root.children.forEach(collapse);
update(root);
// Collapse the node and all it's children
function collapse(d) {
if (d.children) {
d._children = d.children
d._children.forEach(collapse)
d.children = null
}
}
function update(source) {
// Assigns the x and y position for the nodes
var treeData = treemap(root);
// Compute the new tree layout.
var nodes = treeData.descendants(),
links = treeData.descendants().slice(1);
// Normalize for fixed-depth.
nodes.forEach(function(d) {
d.y = d.depth * 180
});
// ****************** Nodes section ***************************
// Update the nodes...
var node = svg.selectAll('g.node')
.data(nodes, function(d) {
return d.id || (d.id = ++i);
});
// Enter any new modes at the parent's previous position.
var nodeEnter = node.enter().append('g')
.attr('class', 'node')
.attr("transform", function(d) {
return "translate(" + source.y0 + "," + source.x0 + ")";
})
.on('click', click);
nodeEnter.each(function(d){
if (d.data.subprocess){
var sp = d3.select(this).append('g')
.datum(d)
.attr('class','subprocess');
sp.append('path')
.attr('d', 'M0,' + (-d.x - subProcessDist) + 'L0,0')
.style('stroke', '#ccc')
.style('stroke-width', '2px')
.attr("marker-end", function(d) {
return "url(#arrow)";
});
sp.append('circle')
.attr('r', 1e-6)
.style('fill', '#fff');
sp.append('text')
.attr('x', 13)
.style('text-anchor', 'start')
.text(function(d){
return d.data.subprocess[0].name;
});
}
});
// Add Circle for the nodes
nodeEnter.append('circle')
.attr('class', 'node')
.attr('r', 1e-6)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
});
// Add labels for the nodes
nodeEnter.append('text')
.attr("dy", "2em")
.attr("x", function(d) {
return d.children || d._children ? 13 : 13;
})
.attr("text-anchor", function(d) {
return d.children || d._children ? "start" : "start";
})
.text(function(d) {
return d.data.name;
});
// UPDATE
var nodeUpdate = nodeEnter.merge(node);
// Transition to the proper position for the node
nodeUpdate.transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + d.y + "," + d.x + ")";
});
nodeUpdate.select('.subprocess')
.transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + (0) + "," + (d.x + subProcessDist) + ")";
});
nodeUpdate.select('.subprocess').select('circle').attr('r', 10);
// Update the node attributes and style
nodeUpdate.select('circle.node')
.attr('r', 10)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
})
.attr('cursor', 'pointer');
// Remove any exiting nodes
var nodeExit = node.exit().transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + source.y + "," + source.x + ")";
})
.remove();
// On exit reduce the node circles size to 0
nodeExit.selectAll('circle')
.attr('r', 1e-6);
// On exit reduce the opacity of text labels
nodeExit.selectAll('text')
.style('fill-opacity', 1e-6);
// ****************** links section ***************************
// Update the links...
var link = svg.selectAll('path.link')
.data(links, function(d) {
return d.id;
});
// Enter any new links at the parent's previous position.
var linkEnter = link.enter().insert('path', "g")
.attr("class", "link")
.attr('d', function(d) {
var o = {
x: source.x0,
y: source.y0
}
return diagonal(o, o)
})
.attr("marker-end", function(d) {
return "url(#arrow)";
});
// UPDATE
var linkUpdate = linkEnter.merge(link);
// Transition back to the parent element position
linkUpdate.transition()
.duration(duration)
.attr('d', function(d) {
return diagonal(d, d.parent)
});
// Remove any exiting links
var linkExit = link.exit().transition()
.duration(duration)
.attr('d', function(d) {
var o = {
x: source.x,
y: source.y
}
return diagonal(o, o)
})
.remove();
// Store the old positions for transition.
nodes.forEach(function(d) {
d.x0 = d.x;
d.y0 = d.y;
});
// Creates a curved (diagonal) path from parent to the child nodes
function diagonal(s, d) {
path = `M ${d.y} ${d.x}
L ${s.y} ${s.x}`;
return path;
}
// Toggle children on click.
function click(d) {
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
}
</script>
</body>
</html>
关于javascript - D3.js 流程图,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/41451747/
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