d3 hierarchy

What is D3.js?Bottom line: D3.js is a JavaScript library that manipulates data!Start with a simple exampleLearning a new thing is very simple, we first, and then we will change its sentence, contrast the effect of the present to learn the effect of this property, OK, here is what we want to do: Does it look quite complicated? Let's take a look at his source code in the end what is it? Does it look quite com

In the "Getting Started-10th chapter" made a map of China, in which the color values of the provinces are randomly assigned values. If you want to reflect some values on the map, you can use the color changes to represent the change in values.1. IdeasFor example, a range of domains is:[10, 500]It is hoped that 10 with light green, 500 with dark green, 10 to 500 between the value of light green and dark green between the color expression. Obviously, a function is needed here, the passed-in parame

-side, so Excel does not discuss the data visualization of multiple forks, even though it can now or later be implemented.Today's popular web data visualization technologies include d3.js, tableau and many more. D3 has a lot of visual graphics, too much to see. specifically visible d3-example. Tableau's support for treemap, among other things, is particularly pro

The scale is a very important concept in D3. It is not a good way to use the size of a numeric value to represent pixels directly when drawing a drawing, and this chapter is about solving this problem.first, why need scaleThe previous chapter produced a column chart with an array that, when plotted, directly assigns a value of 250 to the width of the rectangle, that is, the width of the rectangle is 250 pixels. This approach is very limited if the val

Before writing a demo There are some things to use D3 to achieve some effects but in many forums to find resources can not find the way to use the d3.js in Vue, npm above the D3 relatively speaking is very impersonal no say on webpack how to use D3.jsFinally, a long time to see a foreign big guy see his case successful

A server to do mobile app application in a cloud, very curious if you do not modify the SSH port, how many times a day will be violently cracked? With this question, look at the/var/log/messages log, grep How many of the "Failed" in the log records ...Because the messages log will have logrotate, so:grep "^mar 1"/var/log/messages* |grep "Failed" | Wc-lGet the number of violent hacks from 1th to 7th respectively this month, respectively:2015-03-07,41262015-03-06,334992015-03-05,800962015-03-04,70

Since React is a interested in the V (view) of the MVC, it plays, and toolkits. This includes AngularJS and D3.A app with React and D3.js:/** @jsx react.dom*/varAPP =React.createclass ({getinitialstate:function () { return{data: [{val:5}, {val:4}, {val:7}, {val:6}, {val:8}, {val:1}]}, Componentwillmount:function() {setTimeout (function () { This. Renderchart ( This. State.data); }.bind (

Bundle is a rather peculiar layout in D3, with only two functions, and it needs to be used in conjunction with other layouts. This paper describes how to make the bundle diagram.There are very few examples of bundle graphs, and it is easy to find: http://bl.ocks.org/mbostock/1044242However, this example is somewhat complex, not easy to understand, and there is no corresponding explanatory text (D3 official

, profit:370 0},{year:2008, profit:4900},{year:2009, profit:700}]},{name: "SmartPhone", sales: [{year:2005, profit:2000 },{year:2006, profit:4000},{year:2007, profit:1810},{year:2008, profit:6540},{year:2009, profit:2820}]},{na Me: "Software", sales: [{year:2005, profit:1100},{year:2006, profit:1700},{year:2007, profit:1680},{year:20 , profit:4000},{year:2009, profit:4900}]} ];The dataset is an array, and each item of the array is an object that contains name and sales. Name is the produ

My personal blog: www.ourd3js.comCSDN Blog for: blog.csdn.net/lzhlzzReprint please indicate the source, thank you.A string diagram (Chord), which is used primarily to represent a connection between two nodes. For example, with:A line representation between two points. who has contact with whom:The thickness of the line represents the weight:Watermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqvbhpobhp6/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma==/dissolve/70 /gravity/southeast ">The above introduction st

First,PrefaceAs needed, theBoss lets you draw a horizontal histogram, showing yesterday's data on the left, and today's data. Draw with D3Second,Counterfeit DataToday.csvname,value,unita,2000,%b,1000,tc,1400,￥d,32,de,520,df,10000,dg,5500, Yuan H,740,ti,850,tj,950,tk,1100,tl,1200,tYesterday.csvname,value,unita,1000,%b,800,tc,1200,￥d,30,de,500,df,10000,dg,5000, Yuan H,700,ti,800,tj,900,tk,1000,tl,1100,tThird,DrawingApproximate process3.1 Canvas size, Position3.2 Mapping relationships of data,ordin

-mar-12 606.98 58.01We use Data-close as a data set and Data-open as a data set. Now we have these data in the file DATA2.TSV and import the file:Get the data D3.TSV (function (Error, data) { Data.foreach (function (d) { D.date = Parsedate (d.date); D.close = +d.close; D.open = +d.open; });It is important to remember to do a data conversion to ensure that a number is stored in the D.open!Define a new curveLike the previous

My personal blog is: www.ourd3js.comCSDN Blog for: blog.csdn.net/lzhlzzReprint please indicate the source, thank you.A very important concept was used in the previous section-scale ( This does not know what to translate into, let's call it proportions ). This section will focus on how it is used.Before introducing scale, let's introduce two functions that appear together with the scale, and also appear in the previous section. D3.max ()

What is a Sankey diagram? Draw a simple Sankey diagram with D3 Add text Circular node Add an interaction effect Note: This article without the author's permission is forbidden reprint and deduction 1 What is a Sankey diagram? Sankey diagram is 流图 flow diagram a kind of (), used to describe the flow of energy, population, economy and so on. First proposed by the Irish Matthew Henry Phineas Riall Sankey. Sank