In D3, the General Update Pattern is the name given to what happens when a data join is followed by operations on the enter, update, and exit selections. When a chart's data changes over time and each update can both create new elements and destroy e…

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…

When the data being rendered by a chart changes, sometimes it necessitates a change to the scales and axes of the chart as well. This lesson demonstrates how to animate and synchronize axis transitions on a column chart. var svg = d3.select('.chart')…

一.动态效果 D3 支持制作动态的图表.有时候,图表的变化需要缓慢的发生,以便于让用户看清楚变化的过程,也能给用户不小的友好感. 1.什么是动态效果 前面制作的图表是一蹴而就地出现,然后绘制完成后不再发生变化的,这是静态的图表. 动态的图表,是指图表在某一时间段会发生某种变化,可能是形状.颜色.位置等,而且用户是可以看到变化的过程的.例如,有一个圆,圆心为 (100, 100).现在我们希望圆的 x 坐标从 100 移到 300,并且移动过程在 2 秒的时间内发生.这种时候就需要用到动态效果,在…

d3的enter和exit 网上有很多blog讲解.说的还凑合的见:https://blog.csdn.net/nicolecc/article/details/50786661 如何把自己的rude绘图代码,进行精致化(update) 不多比比,上代码示例: d3.selectAll('.circle_group').children().remove(); var circle_group = d3.selectAll('.circle_group') .data(circleData) .…

Most of D3’s native selection APIs also return the selection (or a new selection), to enable multiple method calls to be chained together. Since the code you write isn’t on the selection prototype, chaining your methods would take some extra work. se…

SVG is a great output format for data visualizations because of its scalability, but it comes with some idiosyncrasies and unique challenges. In this lesson we’ll learn how to use graphics containers, the SVG equivalent of a div, as well as text elem…

关于transition的几个基本点: 1. transition()是针对与每个DOM element的,每个DOM element的transition并不会影响其他DOM element的transition操作: 2. 对于每一个DOM element的transition每次只能执行一个,如果在一个DOM element上添加了许多transition操作,只有最后一个会起作用,前面的都会被覆盖掉.但是例外是,当这些transition是chaining的形式连接的时候,这些trans…

1. 安装: npm i d3 --save 2. 引入:main.js import * as d3 from "d3"; Vue.prototype.$d3 = d3; window.d3 = d3; //暂时设置为全局变量 3. demo代码:  demo源码参考地址 <template> <div style="width: 100%;height: 100%;"> <svg version="1.1" xm…

在 Data joins 章节我们演示了当data和dom element个数相同时的情况 <div id="content"> <div></div> <div></div> <div></div> </div> 给定下面的数据 var myData = [ 10, 40, 20 ]; 当我们对div元素join上数据时 d3.select('#content') .selectAll('…