Making SVGs responsive is unfortunately not as simple as adding some media queries. This lesson introduces the viewBox attribute, which is used to control how SVGs scale. We’ll also examine a reusable function that can be used to make nearly any visu…
Since D3 outputs standard markup, you can use familiar dev tools and inspectors to debug your visualizations. In this lesson we’ll look at how to use Chrome Dev Tools to examine the data associated with your generated markup and experiment with style…
how to use d3.max to normalize your dataset visually within the specific bounds of a variable domain. <!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <script src=&qu…
1.  首先了解SVG的基本元素 http://www.w3school.com.cn/svg/ 2.  了解d3的专有名词  http://www.cnblogs.com/huxiaoyun90/p/4207847.html 3.   了解d3的基本使用API select  selectAll append attr enter  exit text on 4.  根据需要学习d3对应layout布局 待续…
rt d3.transform在新版本中移除 需要自行写出该功能 function getTranslation(transform) { // Create a dummy g for calculation purposes only. This will never // be appended to the DOM and will be discarded once this function // returns. var g = document.createElementNS("…
按字母顺序 axis:数轴或坐标轴表示两个维度上数据尺度的直线 bar chart:条形图 (参见Excel)以矩形宽度反映数值大小的图表形式 bar:条形以宽度反映数值大小的矩形(rect) bind:绑定把数据和视觉元素联系在一起的函数 column chart:柱形图 (参见Excel)以矩形高度反映数值大小的图表形式 column:柱形以高度反映数值大小的矩形(rect) datum:资料对数据或数据值的另一种称呼,参见http://en.wikipedia.org/wiki/Datum…
//d3.scan /* 新的d3.scan方法对数组进行线性扫描,并根据指定的比较函数返回至少一个元素的索引. 这个方法有点类似于d3.min和d3.max. 而d3.scan可以得到极值的索引而不仅仅是计算极值. */ var a1 = [1,3,5,2,9]; var i = d3.scan(a1,function(a,b){ return b-a; // 返回最大值的索引, a-b; 返回最小值的索引 }); console.log(i); //4; //d3.ticks d3.tick…
D3 makes it easy to add meaningful animations to your data visualizations. Whether it’s fading in new items or tweening existing shapes to display new values, adding transitions is easy. This lesson shows you how to add animations while building on y…
D3.js v5 Tutorials D3.js v5 教程 https://github.com/d3/d3/blob/master/API.md CHANGES https://github.com/d3/d3/blob/master/CHANGES.md 0xfffff & .toString(16) 16 进制转换 d3-scale https://github.com/d3/d3-scale#installing # d3 global is exported $ npm i -S d…
如何使用d3来解析自定义格式的数据源? var psv = d3.dsvFormat("|"); // This parser can parse pipe-delimited text: var output = psv.parse("first|last\nabe|lincoln") console.log(output[0]) // 将输出以下内容: => {first: "abe", last: "lincoln"…