codecademy d3

D3.js is also a JavaScript framework, like jquery, except that his specialty is in the data visualization of this piece. So don't think the D3 is so complicated. In the above code we can see some of the uses of D3:Select element:d3.select ("element"), this is the $ () in jquery, but not in shorthand form.After creating and adding a new element to the selected ele

Objective In a nutshell, D3.js,d3.js is a JavaScript library based on data manipulation documents. D3 helps you to bring energy to your data by using HTML, SVG, and CSS. D3 values Web standards to provide you with the full functionality of modern browsers, rather than giving you a proprietary framework. Combines power

Commonly used to see, there are a few places do not understand.The zoom function that I wrote. On ("Zoom", function () {That.svg_obj.select (". X.axis"). Call (Xaxis); var _lines = That.lines; for (var i=0; i　　D3 API Zoom

Alice bought a lot of pairs of socks yesterday. But when she was went home, she found that she had lost one of the them. Each sock has a name which contains exactly 7 charaters.Alice wants to know which sock she had lost. Maybe can help her.InputThere is multiple cases. The first line containing a integer n (1 n N Pairs of socks. For the following to1 lines, each line was a string with 7 charaters indicating the name of the socks that Alice Took back.OutputThe name of the lost sock.Sample Input2

Original link:Http://d3.decembercafe.org/pages/lessons/3.htmlParse the data and datum principle: Datum (): Binds a data to a selection set Data (): Binds an array to the selection set, and the values of the array are bound to each element of the selection set, respectively When printing, it is found that the attributes of each P element will be one more __data__, and the corresponding data will be bound on this property.Datum ()

# # # DEMO1 Features * * * Support node drag and Drop * Support node drag and hold position * Support mouse floating to node display node information * Support mouse floating to node hide unrelated nodes and lines * Support canvas Overall zoom move # # # Demo2 function * * * support node drag and Drop * Support node drag and hold position * Support mouse floating to node display node information * Support double node hide unrelated nodes and lines can accumulate double-click Nodes * Su

var time = new Date (0, +); 2017.1.19 Thursday var format = D3.time.format ('%a '); Console.log (time); Thu Jan 00:00:00 gmt+0800 (China Standard Time) Console.log (' Week ', format); Thu %a: Abbreviation of the Week//Thu%A: Full name of the Week//Thursday %B: The abbreviation of the month//Jan%B: Full name of the month//January %d: Number of days in the month, less than 2 bits with 0 complement [01, 31]%e: Number of days in the month, less t

;var height = 300;var svg = d3.select ("Body"). Append ("SVG"). attr ("width", width). attr ("height", height);And then add the text, with the text element, so we're familiar with the code:var text = svg.append ("text"). attr ("x", "+"). attr ("y", +). attr ("Font-size", "attr"). Text ( STR);The results are as follows:As you can see, the contents of the text element label have the entire string, but because SVG has a width of only 300, it does not sho

The advanced series of tutorials has been completed and is hereby summarized.At the beginning of the month, I said the end of the advanced tutorial, today is the last day, can be done. O (∩_∩) o~As a result, the tutorials for the "Getting Started"-"advanced"-"premium" three series are complete. The purpose of this tutorial is to provide a network of free learning series, I hope you can enjoy.In the process of writing the article, the author's understanding of

In the "Advanced-Chapter 1.0" explains how to use the text and Tspan in SVG to achieve the function of line wrapping, this article on this feature is encapsulated, can be used directly later.1. Reference JS file: Multext.jsAfter downloading, refer to the or directly through the URL reference:Of course, to use this file, you should also refer to the D3 library:2. Parameters of the functionOnly one function Appendmultitext () is implemented in the file,

Technical Science: Nikon D3's Quick Start ByAndy YangIssue a table before 1 month (Slide your mouse over the image side to side for animation) Operation Method: move the mouse to the left or right of the animation to see the animation. The above video, which seems to have been shot with a high-speed camera, is actually the result of the cooperation between two filmmakers, Marianne Oelund and Jeffery Friedl. Marianne is the creator of the original

It is also not difficult to draw a horizontal histogram, first inserting a G in SVG and then inserting a rect in G.1.html CodeDOCTYPE HTML>HTML> Head> MetaCharSet= "Utf-8" /> title>title> Head> Body> DivID= "Container">Div> Body> Scripttype= "Text/javascript"src= "Js/d3.js" >Script> Scripttype= "Text/javascript"src= "Js/shuzhuangtu.js" >Script>HTML>2.js Codevardata = [1,3,4,6,2,9,7,3,8],bar_height= 50, Bar_paddin

Randomly generated data var rand = D3.random.normal (0,25) var dataset = [];for (var i = 0;i A histogram data conversion function:Data conversion var bin_num = 15var Histogram=d3.layout.histogram () . Range ([ -50,50])//Interval range . Bins (Bin_num)///number of separators . Frequency (True)//true: number of statistics; false: Statistical probability var data = histogram (dataset); Console.log (da

Column chart is one of the simplest visual icons, mainly composed of rectangles, text labels, and axes. For the sake of simplicity, this article draws only the rectangular parts to illustrate how to use D3 to draw in the SVG canvas.First, what is the canvas?The first few chapters of the processing objects are HTML text, no graphics involved in the production.To draw, the first thing you need is a drawing of the "canvas".HTML 5 provides two powerful "c

EXTJS and D3 are both powerful. If you do not want to explain them, put the D3 plot directly into an ext tab and directly add the Code: It can be used to draw a topology.Ext. define ('EB. view. content. singleview ',{Extend: 'ext. panel. Panel ',Alias: 'widget. singleview ', Layout: 'fit ', Title: 'Single view ', InitComponent: function (){This. callParent (arguments );}, OnRender: function (){Var me = this

Update, Enter, Exit are three very important concepts in D3, which deal with situations where the selection set and the number of data relationships are uncertain.First, what is Update, Enter, ExitSvg.selectall ("rect") // Select all rectangles within SVG . Data (DataSet) // bound array . Enter () // Specify the Enter portion of the selection set . Append ("rect") // Add a sufficient number of rectangular elements This c

summarize the installation process for a D3.js deployment node environmentPreparation phase:first, the computer to install the node environment, this stage filtered out, if the node environment is not installed, then do not play based on the node environment and other things. Build the Environment:I create a project directory D3node in my own F: System disk, and then create a Package.json file that is configured insideWhere: The Dependencies field des

D3 New Topic Homepage In a blink of an eye, this introductory series has accumulated more than 22 articles, I think as d3.js this data visualization tool is enough to get Started. I believe just to read this Series. It is possible to complete most of the visualization work in the future with the aid of Queries.D3.js's Earliest v1.0 version was announced by Michael Bostock on February 18, 2011, after s

We don't say much, this article mainly introduces the use of D3.js packaging text to achieve the function of automatic line-wrapping, let's take a look together. I. Referencing multext.js documents Multext.js function Appendmultitext (container, str, POSX, posy, Width, fontsize, fontfamily) {if (Arguments.length Can be saved as later, referenced in the label: Of course, to use this file, refer to the

I. Introduction to Histograms A histogram is a way of analyzing a photograph, representing the brightness horizontally, representing the number of pixels vertically. First, the brightness of all the pixels in the photo is analyzed, then the specific values are calculated and then mapped to the horizontal axis. In this case, the higher the number of pixels on this brightness. The histogram of the viewing rule is "left black right white", the left represents the dark part, the right side represe