d3 time series

. d:d.parent). name);}). On ("MouseOver", function (d) {d3.select (this). Style ("Fill", "Yellow");}). On ("Mouseout", function (d) {d3.select (this). Transition (). Duration ((). Style ("Fill", function (d) {return color ( D.children? d:d.parent). Name); });}); Rects.append ("text") . attr ("Class", "Node_text"). attr ("Transform", function (d,i) {return "Translate (" + (D.X+20) + "," + (D.Y+20) + ")";})

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

of Code. Be careful not to forget to refer to the D3.js source File.[html]View PlainCopy html> head> meta charset="utf-8"> title>helloworldtitle> head> body> P>hello World 1P> p>hello World 2P> script src="http://d3js.org/d3.v3.min.js" charset="utf-8"> Script> script> D3.select ("body"). selectall ("p"

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

China), just:[HTML]View PlainCopy Sp.text ("China"); Can. If you want to use the set to assign a value, to use function functions (d,i), the function of the first parameter means datum (data), the second argument is index (index), it is important to note that when data function data is specified The set of data set and the P set you selected are one by one corresponding (if the number of sets and p is exactly the same, the case will be discussed later). The function has only one

(). Append ("Tspan"). attr ("X", Text.attr ("X")). attr ("dy", "1em"). Text ( function (d) {return D;});The results are as follows:Complete.The complete code can be found in the following links, right-click on the source code:Http://www.ourd3js.com/demo/G-1.0/tspan.htmlThank you for reading.Document Information Copyright Notice: Attribution (by)-Non-commercial (NC)-No deduction (ND) Published: December 28, 2014 More content: our D3.

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 numbers, use integers only But Topojson seem

font size is 20, and the font is Arial. The results are as follows:As you can see, four lines of text are added, each line having a length of 120 pixels. Appendmultitext automatically added The return value of Appendmultitext () is the selection set of the var str = "Green son Geumcheon, leisurely my heart, but for June so, pondered so far." "; var multext = Appendmultitext (svg,str,30,100,120,20," SimSun "); Multext.attr (" Transform "," rotate (-20) ");The text rotates counterclockwise 20 deg

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

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

[D3.js getting started series-10.3] Difference and connection between GeoJSON and TopoJSON files, geojsontopojson My personal blog is: www.ourd3js.com The csdn blog is blog.csdn.net/lzhlzz. Please indicate the source for reprinting. Thank you. A friend left a message a few days ago asking about the relationship between the GeoJSON file and the TopoJSON file. I am not very clear about it. After some queries

() when the corresponding element is too large (the number of bound data When the corresponding element is too large, it is usually necessary to delete the element so that it is equal to the number of bound data. The back is usually followed by the remove operation.Here's a look at the specific usage:[JavaScript]View PlainCopy The above code uses the variable name update and enter respectively to represent the respective part, the result of the above code is:The resu

My personal blog is: www.ourd3js.comCSDN Blog for: blog.csdn.net/lzhlzzReprint please indicate the source, thank you.The GeoJSON file was used when making a map of China. Later I found that the file was too large for 2,364 KB, and of course this ensures that the map is accurate, but we don't usually need that exact boundary, so it's necessary to narrow it down. Fortunately, there have been predecessors to do this work, really walnuts, posterity, here to express our thanks.Conversion method:1. Op

Let's take a look at the effect chart. Directly below the source code, HTML file Linechart.js is responsible for loading and refreshing the line chart function Loadlinechart (ElementID, DataSet) {var svg = D3.select ("#" + ElementID); var STRs = svg.attr ("Viewbox"). Split (""); alert (dataset); var width = strs[2]; var height = strs[3]; Outer box var padding = {top:50, right:50, bottom:50, left:50}; var names = new Arra

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

From:http://www.cnblogs.com/kemaswill/archive/2013/04/01/2993583.htmlIn the time series, we need to predict the following trend based on the current data of the time series, and the three exponential smoothing (Triple/three Order exponential smoothing,holt-winters) algorithm can predict the

Tags: Layer III ase HTTPS article Zabbix storage thinking dataWThinking about the time series database-csdn.net http://www.csdn.net/article/2015-07-13/2825192Store and process timeseries data ("Time series Databases" chapter III) 1190000002797644 selection criteria for time

First of all, from the point of view of time can be a series of basically divided into 3 categories: 1. Pure random sequence (white noise sequence), this time can stop the analysis, because it is like predicting the next coin which side is as irregular as possible. 2. Stationary non-white noise sequences , whose mean and variance are constants, for such sequences

1 time series and stochastic processes Random variable sequence Y t:t=0,±1,±2,±3,... is called a stochastic process and is used as a model for observing time series. 2 mean, variance and covariance For the random process Y t:t=0,±1,±2,±3,..., the mean function is defined as follows:Μt =e (Y t), t=0,±1,±2,...That is, μt

This learning note is from the "Time series analysis-based on R" written by teacher Wang After the preprocessing of a time series, it is shown that the model has the value of extracting information, then the next model is established to make the prediction. Here are three important models for fitting