d3 hierarchy

[D3.js advanced series-1.2] solution for garbled characters when reading CSV files, d3.jscsv When d3.csv is used in D3 to read CSV files, garbled characters may occur. How can this problem be solved?1. garbled Problem When reading the xxx.csv file using d3.csv, if the xxx.cs

[D3.js advanced series-1.1] Reading of other table files, d3.js1.1 CSV table files use commas as unit delimiters, other TSV files with Tab as unit delimiters, and table files with other manually defined delimiters. This article describes how to read them in D3.1. What is a TSV table file? TSV (Tab Separated Values), tabulation delimiter value, which is different from the CSV file only by separator. The form

[D3.js advanced series-6.0] Drag and drop applications (Drag) and d3.jsdrag Drag (Drag) is an important interactive method. This article describes how to use Drag and drop.1. Definition of drag D3.behavior. drag () can be used in D3 to define the drag behavior. var drag = d3

[D3.js advanced series-4.0] Draw arrows, d3.js4.0 Drawing in the SVG drawing area, when drawing a line and curve, you often need to add an arrow somewhere. This article describes how to add arrows to straight lines and curves in D3. So far, we have drawn D3 charts in the SVG drawing area. Although

Data Visualization and D3.js, data visualization D3.jsData Visualization Data visualization is a topic for how to better present data. After the emergence of big data, it becomes more important and urgent. Previously, using excel for column charts, pie charts, and line charts was one of the most commonly used data visualization methods. On the WEB end, the popular extjs, fusioncharts, and jfreechart were us

Learning D3.js (hereinafter referred to as D3) also has a period of time, run D3 do a few projects. I found that Chinese D3 tutorials very few, foreign materials but require a certain degree of English reading ability (recommended site: Http://bl.ocks.org/mbostock), so the germination of writing a

Learning D3.js (hereinafter referred to as D3) also has a period of time, run D3 do a few projects. I found that Chinese D3 tutorials very few, foreign materials but require a certain degree of English reading ability (recommended site: Http://bl.ocks.org/mbostock), so the germination of writing a

You probably use a framework or standalone library to the load data into your apps, and if that's overkill for your needs ? What if you ' re just putting together a quick demo? This lesson demonstrates D3 's APIs for loading data on it own, as well as some helpful methods for inspecting your data a nd preparing it for use with D3.function LoadData () {D3.json ('D

[D3.js advanced series-3.0] partition graph, d3.js3.0 The Partition graph is also a Layout of D3 ). This layout is very interesting. It can be made into a square or a circle. This article first introduces how to create a square partition graph, which is also the most basic form of a partition graph. A partition chart is also used to indicate the relationship bet

[Advanced series of D3.js-5.0] histogram, d3.js5.0 The Histogram is used to describe the probability distribution. D3 provides the Histogram layout Histogram for data conversion. Suppose there are arrays a = [10, 11, 11.5, 12.5, 13, 15, 19, 20 ~ The value range of 20 is divided into five segments: 10 ~ 12, 12 ~ 14, 14 ~ 16, 16 ~ 18, 18 ~ 20 Which of the following

[D3.js advanced series-9.0] interactive prompt box, d3.js9.0 In general, too many texts should not exist in charts. However, sometimes some text is required to describe certain graphic elements. Then, you can implement an interaction: When you move the mouse to a certain graphic element, a prompt box appears, containing the description text. This is a simple, universal notebook that applies to almost all ch

How to draw multiple curves with D3 step by step and draw curves with D3 step by stepBar Chart: http://bl.ocks.org/mbostock/3885304This is the basic form of a bar chart.Axis is a number Axis;Tickets is the ruler on the number axis. The second tickets parameter % can display the percentage of [0, 1;RangeRoundBands is divided by interval on [0, width], which is suitable for the column chart. rangePoints is di

[D3.js selection set and data details-4] processing method and processing template of enter and exit, d3.jsexit After data is bound, the selection set is divided into three parts: update, enter, and exit. What are the solutions for these three parts? This article describes the processing method and a common processing template.1. How to Deal with enter If there are not enough elements, the processing method

Tall and essential! Analysis of D3.js contribution to products and d3.js contribution In this era of talking with data (the age of relying on faces to eat), there is no good presentation form (not a handsome and clear face) and the impact on the entire product, that's simple... In the field of data visualization competition, all users on the Internet pay great attention to front-end presentation of their

[D3.js pro series-1.0] Reading CSV table files, d3.jscsv In the tutorials of the Getting Started series, we often use d3.json () functions to read files in json format. The json format is very powerful, but it may not be suitable for common users. Common users prefer table files generated using Microsoft Excel or OpenOffice Calc, which are easy to edit and easy t