D3绘制圆形阵列 [英] D3 Plot array of circles
本文介绍了D3绘制圆形阵列的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我试过这个圆形图示例如下:
I've tried the circle plot example as the following:
var x=20, y=20, r=50;
var sampleSVG = d3.select("#viz")
.append("svg")
.attr("width", 800)
.attr("height", 600);
sampleSVG.append("circle")
.style("stroke", "gray")
.style("fill", "white")
.attr("r", r)
.attr("cx", x)
.attr("cy", y);
但我想弄清楚如何在没有循环的情况下绘制数组中的一系列圆:
But I want to figure out how to plot without a loop a sequence of circles from an array like:
data = [
[10,20,30],
[20,30,15],
[30,10,25]
];
推荐答案
也许这个例子可能有帮助吗?
Maybe this example could help?
var data = [
[10,20,30],
[20,30,15],
[30,10,25]
];
var height = 300,
width = 500;
var svg = d3.select('body').append('svg')
.attr('height', height)
.attr('width', width)
.append('g')
.attr('transform', 'translate(30, 30)');
// Bind each nested array to a group element.
// This will create 3 group elements, each of which will hold 3 circles.
var circleRow = svg.selectAll('.row')
.data(data)
.enter().append('g')
.attr('transform', function(d, i) {
return 'translate(30,' + i * 60 + ')';
});
// For each group element 3 circle elements will be appended.
// This is done by binding each element in a nested array to a
// circle element.
circleRow.selectAll('.circle')
.data(function(d, i) { return data[i]; })
.enter().append('circle')
.attr('r', function(d) { return d; })
.attr('cx', function(d, i) { return i * 60; })
.attr('cy', 0);
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