d3 js visualization

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"D3.js Advanced Series-9.0" Interactive Prompt box

Cue box to 1.0 (completely opaque) */tooltip.html (D.data[0] + "shipments are" + "D3.event.pageX and D3.event.pageY are the coordinates of the current mouse relative to the browser page, while the left and top styles are relative to the browser page for 3. ResultsAs shown, a prompt box appears when you move the mouse over "Lenovo."Source code please click on the following link, the message to view the sour

D3.js the method of realizing scatter chart and bubble chart _javascript skills

Objective Small make up has already shared with everybody before "D3.js realizes the method of the histogram to explain" and "D3.js realizes the method of line chart to explain" these two articles, have already introduced the columnar chart and line chart. Here's a say and of these two very similar graphs--scatter and

D3.js of data (), enter () and exit () _javascript Tips

D3 is widely used and is now one of the mainstream data visualization tools. Everyone in the first contact with the use of d3.js, the most difficult place is data (), enter (), exit () these several operations. After I have been in touch for some time and have some understanding, simply say what I understand. Data ()

"D3.js Advanced Series-2.1" Mechanics diagram of event + vertex fixed

"advanced-Chapter 2.0" code, allowing users to arbitrarily fix and unlock vertices, you can add code as follows: When the drag starts, the dragged vertex is set to fixed:var drag = Force.drag (). On ("DragStart", function (d,i) {d.fixed = true; Drag to set the object to be dragged to a fixed label_text_2.text ("Drag state: Start");})When the mouse double-clicks the vertex, unlocks the vertex:Nodes_img.on ("DblClick", function (d,i) {d.fixed = false;})4. ResultsIn the upper left corner, add t

Share a d3.js-based interactive reusable chart JavaScript class library-nvd3.js

Date: 2012-6-30 Source: gbin1.com Online Demo There are many powerful chart class libraries. Today we will introduce nvd3.js, which is based on the well-known d3.js class library. It is designed to help you create reusable d3.js charts and chart components without reduci

"D3.js Advanced Series-3.0" Partition map

. 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) + ")";})

How to use the scale of the D3.js starter Series-4

In the previous chapter, we used a very important concept-scale, which explains how to use this section.1. Maximum value and minimum valueBefore introducing the scale, we introduce two functions that appear together with the scale bar, and also appear in the "3rd chapter". D3.max () D3.min () These two functions are used to find the maximum and minimum values in an array, and if it is a on

ArcGIS API for JS uses d3.js callout graphic instead of Textsymbol mode

({' id ': This.domid});},init:function () {varmap= This.map;on (map, ' Pan ', lang.hitch (This,this._pan)); On (map, ' Zoom-start ', lang.hitch (This,this._zoomstart)); O N (map, ' Zoom-end ', lang.hitch (this,this._zoomend)); This._initialize ();},_initialize:function () {This._removeallchildren (); This._draw ();},_removeallchildren:function () {dojo.empty (this.domid);},_draw: function () {if (!this.option.labelfields) {return;} for (vari=0;iPageUse D3

Parameters of "D3.js Advanced Series-2.2" Mechanics diagram

setting the action distance of the gravitational force, exceeding this distance, there is no gravitational force. The default value is infinity.Gravity ()The center of the size function creates gravity, and each vertex moves toward the center, with a default value of 0.1. It can also be set to 0, without the effect of gravity.Theta ()If the number of vertices is too large, the calculation time will be increased (O (n log n)). The theta is meant to limit this calculation, and the default value i

D3.js Study Record

D3.js is also a JavaScript framework, like jquery, except that his specialty is in the data visualization of this piece. So don't think the D3 is so complicated. In the above code we can see some of the uses of D3:Select element:d3.select ("element"), this is the $ () in jqu

"D3.js Advanced Series-2.0" mechanical diagram + Figure diagram

d.target.x;}); Edges_line.attr ("Y2", function (d) {return d.target.y;}); Update the position of text on the connector edges_text.attr ("X", function (d) {return (d.source.x + d.target.x)/2;}); Edges_text.attr ("Y", function (d) {return (d.source.y + d.target.y)/2;}); Whether to draw the text on the connector Edges_text.style ("Fill-opacity", function (d) {return D.source.show | | d.target.show 1:0.0;}); Update the node image and text nodes_img.attr ("X", function (d) {return D.X-IMG_W/2;});

"D3.js Advanced Series-2.0" mechanics diagram + Figure diagram

= 20;var Nodes_text = Svg.selectall (". Nodetext"). Data (Root.nodes). Enter ( ). Append ("text"). attr ("Class", "Nodetext"). attr ("DX", TEXT_DX). attr ("dy", Text_dy). Text (function (d) {return d.name;});第1-16 Line: Drawing a picture第10-15: Displays the text on the connector you want to associate with this node when you move the mouse over the picture. This is just a Boolean assignment for D.show, which is used later in the update.第21-30: Draw text below the picture4.5 UpdateTo keep the mec

"D3.js selection set and data detail-3" order of binding data

p.data (persons, function (d) {return d.id;}). Text (function (d) {return d.id + ":" + D.name;});There is only one statement return d.id in the key function. Represents a key using the ID property of an array item. After modifying the contents of the P element with the data of this binding, the result is as follows:As you can see, the results are not arranged in the order of the New Persons Array (6: Zhang San, 9: John Doe, 3: Harry). As shown in binding procedure 1, the order of the bindings d

Summary of "D3.js Advanced series"

", estimated to have 5 videos around, the length is moderate, explain D3 the most basic knowledge, so that beginners quickly get started. (⊙o⊙)A total of 12 articles in the Advanced series are listed below. 1.0 Line wrapping of text 1.1 Wrap Text Wrapping 2.0 Bundle diagram 3.0 Stack diagram 4.0 Matrix Tree Chart 5.0 Color

"D3.js Advanced Series-1.1" Wrap text wrap

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

[4] scale used in d3.js

each of the arrays.The next step in the usage of scale is to be clear:function, yes, it is.function。 Why use scale? Suppose you're going to do a data visualization for a car company now, and you're going to use a column chart for its monthly car sales, assuming that you're selling 100 of 100-pixel-long columns in the month. Next month 500 sales, you use 500 pixels, and then next month and 3000 units? I'm afraid you can't use 3,000 pixels. The scale

Line break for "D3.js Advanced Series-1.0" text

(). 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.

D3.js Study 9

D3.js Data Visualization Practical Manual study notesThe interpolator interpolation a given range of values and prints it in the middle.Character interpolation var data=[];var sizescale=d3.scale.linear (). Domain ([0,9]). Range (["Italic bold 12px/30px Georgia, serif", "Italic bold 120px/180px Georgia, serif "]);

D3.js loading CSV and JSON data

1. Basic commands for loading dataD3 provides methods to load different data types, such as D3.text (), D3.xml (), D3.json (), D3.csv (), and d3.html ().DOCTYPE HTML>Head> Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8" /> title>Testtitle> Scr

D3.js Series--scale

, and so on. However, these values are discrete, the linear scale is not suitable, and the ordinal scale is required.var ordinal = d3.scale.ordinal () . Domain (index) . Range (color); ordinal (0// back to Redordinal(2// return Greenordinal (4// return Black  ordinal scale: d3.scale.ordinal (); usage is similar to linear scale.3. Application:"Utf-8"> It is mainly the application of the two pi

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