【发布时间】：2023-03-11 05:16:01
【问题描述】：
我已经编写了这段代码，以使用 d3 在角度 6 中带来可折叠树。节点之间的链接无法正常工作。请帮我纠正它。
public ngOnInit(): void {
var treeData = [
{
"name": "Top Level",
"children": [
{
"name": "Level 2: A",
"children": [
{
"name": "Son of A",
},
{
"name": "Daughter of A",
}
]
},
{
"name": "Level 2: B",
}
]
}
];
// ************** Generate the tree diagram *****************
var margin = { top: 20, right: 120, bottom: 20, left: 120 },
width = 960 - margin.right - margin.left,
height = 500 - margin.top - margin.bottom;
var i = 0,
duration = 750,
root;
var tree = d3.layout.tree()
.size([height, width]);
var diagonal = d3.svg.diagonal()
.projection(function (d) { return [d.y, d.x]; });
var svg = d3.select(".g").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 + ")");
root = treeData[0];
root.x0 = height / 2;
root.y0 = 0;
update(root);
d3.select(self.frameElement).style("height", "500px");
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
links = tree.links(nodes);
// Normalize for fixed-depth.
nodes.forEach(function (d) { d.y = d.depth * 180; });
// Update the nodes…
var node = svg.selectAll("g.node")
.data(nodes, function (d: any) { return d.id || (d.id = ++i); });
// Enter any new nodes 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.append("circle")
.attr("r", 1e-6)
.style("fill", function (d) { return d._children ? "#f1a33a" : "#f95c33"; });
nodeEnter.append("text")
.attr("x", function (d) { return d.children || d._children ? -13 : 13; })
.attr("dy", ".35em")
.attr("text-anchor", function (d) { return d.children || d._children ? "end" : "start"; })
.text(function (d) { return d.name; })
.style("fill-opacity", 1e-6);
// Transition nodes to their new position.
var nodeUpdate = node.transition()
.duration(duration)
.attr("transform", function (d) { return "translate(" + d.y + "," + d.x + ")"; });
nodeUpdate.select("circle")
.attr("r", 10)
.style("fill", function (d) { return d._children ? "#f1a33a" : "#f95c33"; });
nodeUpdate.select("text")
.style("fill-opacity", 1);
// Transition exiting nodes to the parent's new position.
var nodeExit = node.exit().transition()
.duration(duration)
.attr("transform", function (d) { return "translate(" + source.y + "," + source.x + ")"; })
.remove();
nodeExit.select("circle")
.attr("r", 1e-6);
nodeExit.select("text")
.style("fill-opacity", 1e-6);
// Update the links…
var link = svg.selectAll("path.link")
.data(links, function (d: any) { return d.target.id; });
// Enter any new links at the parent's previous position.
link.enter().insert("path", "g")
.attr("class", "link")
.attr("d", function (d) {
var o = { x: source.x0, y: source.y0 };
return diagonal({ source: o, target: o });
});
// Transition links to their new position.
link.transition()
.duration(duration)
.attr("d", diagonal)
.attr("d", function (d) {
/* calculating the top shift */
var source = { x: d.source.x, y: d.source.y };
var target = { x: d.target.x, y: d.target.y };
return diagonal({ source: source, target: target });
});
// Transition exiting nodes to the parent's new position.
link.exit().transition()
.duration(duration)
.attr("d", function (d) {
var o = { x: source.x, y: source.y };
return diagonal({ source: o, target: o });
})
.remove();
// Stash the old positions for transition.
nodes.forEach(function (d: any) {
d.x0 = d.x;
d.y0 = d.y;
});
}
// 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);
}
}
这就是我需要链接的方式。
我正在使用 Angular 6 和 d3 v3。
【问题讨论】：
标签： angular typescript d3.js treeview orgchart