d3 js visualization

Now let's start with d3.js to deal with the first simple question, and look at the following code:[html]View PlainCopy html> head> meta charset="utf-8"> title>helloworldtitle> head> body> P>hello World 1P> p>hello World 2P> Body> html> If you have studied html, you should know that two lines of text will be printed on the screen, such as:What if you want t

simplified version of GeoJSON, which can be said to be a GeoJSON child. The author of D3.js thinks GeoJSON is not very good, and it is more admired Topojson format.Topojson compared to GeoJSON, the file size is reduced by 80% because: The boundary line is recorded only once (for example, the junction lines in Guangxi and Guangdong province are recorded only once) Do not use floating-point numb

DOCTYPE HTML>HTMLclass= "Um landscape min-width-240px min-width-320px min-width-480px min-width-768px min-width-1024px"> Head> title>title> MetaCharSet= "Utf-8"> Metaname= "Viewport"content= "target-densitydpi=device-dpi, Width=device-width, initial-scale=1, User-scalable=no, minimum-scale=1.0, maximum-scale=1.0 "> Linkrel= "stylesheet"href= "Css/fonts/font-awesome.min.css"> Linkrel= "stylesheet"href= "Css/ui-box.css"> Linkrel= "stylesheet"href= "Css/

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 functi

want to select the third There are two ways:(1) Assign an ID to the third id= "P3">Hello World 3p>Then choosevar sp = d3.select ("#p3"); // Select ElementYou can do it again.(2) If data is bound, it can be manipulated in function (D,i), for exampleSp.text (function(d,i) { if(i==2) { ... } // if i = = 0 and I = = 1 are not specified, the null value will be returned automatically });However, it is important to note that, in thi

use it this way:var link = svg.selectall (". Link"). data (links). enter (). Append ("path") . attr ("Class", "link") . attr ("D", diagonal);This draws the lines between all the nodes. Next we'll draw the node.Nodes are also drawn using the circle in SVG. This is no longer the case. I've already talked about it before. You can also view the source code yourself. The result diagram is:If you want to view the source code, please click on the following URL. Right-click the

("X2", function (d) {return d.target.x;}) . attr ("Y2", function (d) {return d.target.y;}); Node.attr ("Transform", function (d) { return "translate (" + D.x + "," + D.y + ")"; } ";});Here as in section 9.2, tick refers to the time interval, that is, every time interval after the refresh of the picture, the content of the refresh is written in the nameless function functions, the function is written in the contents of the drawing. Here you see, 第7-9 is used for panning, and the

Website: http://d3js.org/Example: Https://github.com/mbostock/d3/wiki/GalleryReference: Online reference //or download to local Begin: D3.select implementing a single element selectionSelect.attr, reading/Setting element properties select.classed, adding/removing element classes Remove the P1 class for P tags　　D3.

slowly reaches the last state of the transformation Elastic with bouncing reach finally state Bounce bouncing a few times at the last state. Called when the shape is:. Ease ("bounce")4.delay ()Specifies the time of the delay, which indicates a certain amount of time before the transition is initiated and the unit is the same in milliseconds. This function can specify a delay for the population. You can also specify a delay for an individual.For general designations, such as:. Trans

(DataSet)). Enter () . Append ("G") . attr ("Transform", " Translate ("+outerradius+", "+outerradius+") ");In the above code, we bind the converted data pie (dataset). There are 5 of data. So 5 g elements are added. The last line of code is the position of the moving element, and the default starting position is the (0,0) coordinates of the SVG draw box, which is the upper-left corner. Note that this time the above code returns theSelect 5 g elements at the same time. Next, for each G elemen

value3. Use of Update and ExitWhen the corresponding element is too large (the number of bound data Now there are three P elements in the body, to bind an array of length less than 3 to the selection set of p, and then handle both the update and exit respectively.varDataSet = [3 ]; //Select the P element in bodyvarp = D3.Select("Body"). SelectAll ("P"); //Get the Update sectionvarUpdate =p.data (dataset);//Get exit SectionvarExit =update.exit ();//ha

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

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.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 confi

"; Arrowmarker.append ("path"). att R ("D", Arrow_path). attr ("Fill", "#000")//Draw the horizontal, vertical axis and add the arrow graphics.append ("line"). attr ("Stroke", "Black"). attr ("Stroke -width "," 1px "). attr (" x1 ", 0). attr (" Y1 ", Max_height). attr (" X2 ", Data.length*rect_step). attr (" y2 ", max_height) . attr ("Marker-end", "url (#arrow)") Graphics.append ("line"). attr ("Stroke", "Black"). attr ("Stroke-width", "1px"). A TTR ("x1", 0). attr ("Y1", Max_height). attr ("X

rectheight =; // the pixel height of each rectangle (including white space) Svg.selectall ("rect"). data (DataSet). Enter () . Append ("rect"). attr ( "x") . attr ("y",function(d,i) { return i * rectheight; }) . attr ("width",function(d) { return D; }) . attr ("height", rectHeight-2) . attr ("Fill", "steelblue");This code adds the same number of rectangles as the length of the dataset array, using the following statement:Svg.selectall ("rect")

) {return"Enter" +D; });As a result, the data that is bound by the Update section and the Enter section is clearly represented.　　　Please remember: The update section is handled in the following way: Updating property values The Enter section is handled in the following way: When an element is added, the property value is assigned Iii. use of Update and ExitWhen the corresponding element is too large (the number of bound data Now there are three P elements i

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 c

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 (

follows:var body = D3.select ("body"); // Select Body (the first body, of course, only one body) var h1 = Body.select ("H1"); // Select the first H1 var all_h1 = Body.selectall ("H1"); // Select all the H1To prove that the above variable H1 selected the first H1.style ("Color", "red");Color the selected elements of the H1 variable, plus this sentence, you will find the result:As a result, you can prove that the first If you