在多行上添加点D3.js具有嵌套数据的图 [英] Add dots on a multi line D3.js Graph with nested data
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问题描述
我是一个D3.js新手,需要一些帮助。
I am a D3.js newbie and need some help.
我有一个从JSON数据生成的多线图:
I have a Multiline Graph generated from JSON data:
"City": "New York",
"Data": [
{
"Date": "20111001",
"Value": "63.4"
},
{
"Date": "20111002",
"Value": "58.0"
},
...
]
},
{
"City": "San Francisco",
"Data": [
{
"Date": "20111001",
"Value": "62.7"
},
{
"Date": "20111002",
"Value": "59.9"
},
=http://jsfiddle.net/hapypork/JYS8n/66/ =nofollow> http://jsfiddle.net/hapypork/JYS8n/66/ 它是工作。但我想要点/圆和每个数据点,不像现在,每个图上只有3个点。我需要迭代通过嵌套的数据,我猜。但是如何?
As you see in here http://jsfiddle.net/hapypork/JYS8n/66/ it is working. But I want dots/circles and each data point and not like it is now, just 3 dots on each graph. I need to iterate through the nested data, I guess. But how?
感谢您帮助我。
推荐答案
href =http://bost.ocks.org/mike/nest/ =noreferrer>嵌套选择:
You need nested selections for this:
svg.selectAll("g.dot")
.data(data)
.enter().append("g")
.attr("class", "dot")
.selectAll("circle")
.data(function(d) { return d.Data; })
.enter().append("circle")
.attr("r", 6)
.attr("cx", function(d,i) { return x(d.Date); })
.attr("cy", function(d,i) { return y(d.Value); })
演示此处。
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