d3 hierarchy

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

I. Windows 32 (Java language)-driven development 1.1 File Usage In the Java folder of D3, there are two folders: classpackage and example. The file is readme.txt. Javard800.dll in classpackage is a Windows dynamic link library for Java JNI. Javard800.java in classpackage is a JNI interface for Java. Javard800demo. Java in example is a test program written in Java. The Calling sequence is as follows: Javard800demo. Java ---> javard800.java

By using d3 and js to visualize data, data can be separated from code to facilitate data modification in the future. This time, a five-dimensional Radar chart is drawn using d3.js, which compares the five attributes of multiple objects on one map. Data is written into data.csv1_data source and written into the type.csv file. Shows the effect. Source code connection: http://download.csdn.net/detail/s

My personal blog is: www.ourd3js.comCSDN Blog for: blog.csdn.net/lzhlzzReprint please indicate the source, thank you.[5.1] section of the production of a relatively perfect chart, but it is static, want to make its dynamic effect? Only a few lines of code are required in the D3.This section will cover the use of 4 functions.1.transition ()You only need to add this to start the transition effect. Add it between two states, for example:. attr ("Fill", "

Use angular resource to load the JSON data in the Prioritydata.json and draw a doughnut chart with D3. Run index.html results:The JSON data in Prioritydata.json is as follows:{"Priority ": { "blocker": " Critical":, "Major": 5, "Minor": +, " Trivial": $}}The index.html code is as follows:D3 Tagged donut chart example using angular directive and JSON data

Enter-update-exit mode Select.data (data), which represents the intersection of the selection graph with the data->update ModeSelect.data (data). Enter () to exclude the intersection of selection graphics with data data on behalf of data->enter ModeSelect.exit, removes all data, representing parts of the selection graph->exit ModeE-U-E is the foundation of D3.jsArray Data binding var data=[10,15,24,46,13,6,96,12,44,61,17];function render (

In the official website you can see a lot of examples. But the favorite is Mbostock's http://bl.ocks.org.And then there are the others:It looks cool--http://www.visualcinnamon.com/portfolioThe simplest and easiest to use--http://www.ourd3js.com/Easy to use small supplement--http://blog.csdn.net/tianxuzhang/article/You can change your code. Official Manual--https://github.com/d3/d3/wiki/api--Chinese ManualAl

If you are interested in D3.js or data visualization, welcome to www.ourd3js.com for discussion. Next I will discuss how to select elements and use data.The page now contains three lines of text with the code: Hello World 1Hello World 2Hello World 3 Defines a set with three elements: var set = ["I like dog","I like cat","I like snake"]; Use these three strings to give the preceding three strings respectively. The Code is as follows: Var sp =

1. The difference between select and SelectAllIn D3, there are two functions for selecting an element: Select and SelectAll, which are very important to use. Let's start by explaining their differences:Select is the first selection of all specified elementsSelectAll is the selection of all of the specified elements (for simultaneous operation)The results returned by these two functions are called selection sets.To see a specific example, the following

My personal blog homepage is: http://www.ourd3js.com/. CSDN Blog Home for: http://blog.csdn.net/lzhlzz/. Reprint please indicate the source. Thank you.Here's how to start with D3.js to deal with the first simple question, first look at the following code:Suppose you have studiedHTML, you should know that two lines of text will be printed on the screen. For example, with:Suppose you want to useJavaScriptTo change these two lines of text, what to do? We

My personal blog is: www.ourd3js.comCSDN Blog for: blog.csdn.net/lzhlzzReprint please indicate the source, thank you.Packing diagram (pack), which is used to contain the relationship to be included, also represents the weights of individual objects, usually with a round set of a circle to represent the former, the size of the circle to represent the latter.First look at the data used in this section: City2.jsonThis is the data for each city's affiliation. We are now going to use the

What is Update, Enter, Exit?Svg.selectall ("rect") //Select all the rectangles within SVG . Data (DataSet) //bound array . Enter () //Specify the Enter portion of the selection set . Append ("rect") //Add a sufficient number of rectangular elementsThis code uses the situation when the following conditions occur:Assuming that there are three P elements in the body, there is an array [3, 6, 9], you can bind each item in the array to a P element, respectively. However