如何在d3.js中创建一个家族树? [英] How do you create a family tree in d3.js?
问题描述
我目前正在从事一个小型家谱实验,并想要实现一个简单的家谱树,如下图所示。
目前为止的最佳搜索结果这只产生一个例子,其中一个孩子只能有一个父节点。但我需要的是在实体(从父亲到母亲)和节点和其他链接(从孩子到父 - 母链接)之间创建链接的能力。
目前我没有固定的数据模式。
我选择了
在上面的例子中,我使用了节点名称A / B / C ...但是你可以根据你的要求。您将需要将文本居中。
我已向代码添加了注释,以帮助您了解流程。
如果你不清楚任何点,请评论我很乐意澄清。
I'm currently working on a small genealogy experiment and would like to implement a simple family tree like in the picture below.
The best search results so far for this only yielded examples where a child can only have a parent node. But what I need is the ability to create links between entities (from father to mother) and links between nodes and other links (from child to the father-mother link). Currently I don't have a fixed data schema for this.
I've chosen d3.js for this because it looks like would be capable of doing the job. I just don't know how or even where to start. Tutorials about d3.js only cover standard charts like bar charts.
I hope someone can help me with this.
My approach is as under:
Lets take the example you have illustrated in the attached figure:
Jenny Of Oldstones is also a the child of Aegon V but the difference between this child and other children of Aegon V is that in this case I am not drawing the link between it.
This is done by setting the node as no_parent: true in the node JSON example:
//Here Q will not have a parent
{
name: "Q",
id: 16,
no_parent: true
}
In the code check the _elbow
function_ this does the job of not drawing the line between it and its parent:
if (d.target.no_parent) {
return "M0,0L0,0";
}
Next scenario is the link going between Node Aerys II and Rahella this node has its set of children.
- I have created a node between them which is marked as
hidden: true,
- I make the
display:none
for such node. It appears that the children are coming from the line between node Aerys II and Rahella
JSON Example:
//this node will not be displayed
{ name: "",
id: 2,
no_parent: true,
hidden: true,
children: [....]
}
In the code check the place where I make the rectangles, the code below hides the node:
.attr("display", function (d) {
if (d.hidden) {
return "none"
} else {
return ""
};
})
Full code is in here: http://jsfiddle.net/cyril123/0vbtvoon/22/
In the example above, I have made the use of node names A/B/C... but you can change it as per you requirements. You will need to center the text.
I have added comments to the code to help you understand the flow. Just in case you are not clear on any point please comment I ll be happy to clarify.
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