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My personal blog is: www.ourd3js.com The csdn blog is blog.csdn.net/lzhlzz. Please indicate the source for reprinting. Thank you. As mentioned above, the text is processed. In this section, D3.js is used as a simple column chart. There are many ways to create a column chart, such as using HTML div labels or svg. SVG is recommended for various graphics. SVG indicates Scalable Vector Graphics. SVG defines images in XML format. If you are not clear about

My personal blog is: www.ourd3js.comCSDN Blog for: blog.csdn.net/lzhlzzReprint please indicate the source, thank you.In the previous sections, all the text is processed, and this section will use D3.js to make a simple column chart.There are many ways to do a column chart, such as using an HTML div tag, or using SVG.It is recommended to use SVG to do all kinds of graphics. SVG means scalable vector graphics (Scalable vector graphic), SVG uses XML form

My personal blog is: www.ourd3js.comCSDN Blog for: blog.csdn.net/lzhlzzReprint please indicate the source, thank you.This section of layout makes a pie chart. In the 9th section, the function of Layout is to transform data into data that is unsuitable for graphical data. Now use the following data:var DataSet = [30, 10, 43, 55, 13];This data should not be used directly in the appeased chart, we must convert it to an angle by calculation. This calculation does not need to be calculated manually b

": +, "target": +, "value": 3}, {"source": +, "target": +, "value": 3}, {"source": +, "target": $, "Value": 5}]}The data consists of two parts, point (nodes) and edge (links), and the value of source and target represents the element that corresponds to the value subscript of the nodes array.Note that regardless of how many attributes the nodes element has, both source and target temporarily point to the person's name, such as Source 1 Target0, which represents Napoleon and Myriel connectionsBy

My personal blog is: www.ourd3js.comCSDN Blog for: blog.csdn.net/lzhlzzReprint please indicate the source, thank you.A cluster diagram (Cluster) is typically used to represent hierarchies, subordinates, inclusions, and contained relationships.Now we give the data and visualize it. The contents of the data are: some of the provinces contained in China, some of the cities included in the provinces. We say that the data file is written in a JSON file and then read with

The first test of the successful D3.js code needs to be opened in the IE9 and above browsers. Firefox and Google can also try. Delete "20"rows="8"id="con">"运行代码"type="button"id="btn"/>Test the successful D3.js code

This two-part article series will demonstrate a visualization technique that helps extract information from the data that has business value, and this article is the first part of the series. You'll see how to use Scalable Vector Graphics (SVG) and open source D3 JavaScript libraries to create visual representations that can be viewed through the browser, conveying information through shapes and colors. I'll demonstrate these techniques with some exam

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

This chapter discusses the events that are commonly used in mechanics diagrams, and then makes improvements to the "Advanced-Chapter 2.0" figure diagram, enabling the user to fix the dragged object.In "Getting Started-chapter 9.2" and "Advanced-Chapter 2.0", the following code is used:Force.on ("tick", function () {});The force here is the layout defined in the previous code, and the tick indicates when the motion is in progress every time a frame is updated. This is the most commonly used event

One, add a rectangle//Width and HeightvarW = 500;varH = 100;varDataSet = [5, 10, 13, 19, 21, 25, 22, 18, 15, 13, 11, 12, 15, 20, 18, 17, 16, 18, 23, 25 ];//Creating SVG elementsvarSVG = D3.select ("Body"). Append ("SVG"). attr ("Width", W). attr ("Height", h); Svg.selectall ("Rect"). Data (DataSet). Enter (). Append ("Rect"). attr ("X", 0). attr ("Y", 0). attr ("Width", 20). attr ("Height", 100);Second, add more than one rectangle//Width and Heightvar

My personal blog is: www.ourd3js.comCSDN Blog for: blog.csdn.net/lzhlzzReprint please indicate the source, thank you.Packing diagram (pack). Used to include the relationship with the included, also represents the weight of the individual objects, pass often use a round set of a circle to denote the former, with the size of the circle to indicate 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 layout of

This demand is actually quite clear, but the online search out of the tutorial is a mess, feel really need to summarize their own.D3.js is now widely used in data visualization, and with the continued development of big data, the framework is expected to become more prevalent in the future (it is said that its author Mike Bostock began full-time development, previously in charge of the New York Times data visualization engineer, he himself moved from New York to San Francisco ...). ）。 Follow the

The vertical histogram is drawn on the basis of the horizontal bar chart.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_width= 50, Bar_padding= 10, Svg_height= 500, Svg_width= (Bar_wid