先来看看效果图
下面直接上源代码 ， html 文件
<html> <head> <meta charset = "utf-8"> <title> 实时刷新折线图 </title> <style> .axis ruta, .axis line {relleno: none; accidente cerebrovascular: negro; Rendimiento de formas: crujes; } .xis text {Font-Family: sans-serif; tamaño de fuente: 11px; } .overlay {relleno: ninguno; Pointer-Events: todos; } .tooltip {ancho: 150px; Altura: Auto; Posición: Absoluto; Font-Family: Simsun; tamaño de fuente: 16px; Línea de altura: 26px; text-align: izquierda; borde: 1px negro sólido; Color de fondo: blanco; Border-Radius: 5px; } .Tooltip .title {Border-Bottom: 1px Solid #000; Text-Align: Center; } .tooltip .descolor {ancho: 10px; Altura: 10px; flotante: izquierda; margen: 9px 8px 1px 8px; } .Tooltip .Destext {display: inline; } .focusline {trazo: negro; ancho de carrera: 1px; Stroke-Dasharray: 5,5; } </style> </head> <body> <script src = "http://d3js.org/d3.v3.js" charset = "utf-8"> </script> <script src = "linechart.js" charset = "utf-8"> </script> <svg contentcriptType = "text/ecmascript" xmlns: xlink = "http://www.w3.org/1999/xlink" zoomandpan = "magnify" style = "de fondo de fondo: #ffffff;" ContentStyletype = "Text/CSS" ViewBox = "0 0 2000.0 2000.0" PreserveAspectratio = "Xmidymid Meet" xmlns = "http://www.w3.org/2000/svg" Versión = "1.0"> <FS> <Symbol Id = "FillGauge1" ViewBox = "0 500.0 300.0.0.0" preservEespectratio = "None Meet"> </Symbol> <Symbol ID = "FillGauge2" ViewBox = "0 0 200.0 200.0" PreserveaSpectratio = "None Meet"> </Symbol> </defs> <use x = "0" y = "0" Xmlins: xlink = "http://wwww.w3.org/19999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999 xlink: href = "#relleno1" xlink: type = "simple" xlink: actuate = "onload" symbolType = "17" xlink: show = "incrustar"/> <use x = "20" y = "20" xmlns: xlink = "http:///www.w3.org/1999/xlink" xlink: href = "#fillgauge2" xlink: type = "simple" xlink: actuate = "onload" symbolType = "17" xlink: show = "incrustar"/> </svg> <script> var dataSet = [{país: "China", GDP: [2000,11920], [2001,13170], [2002, 1450], [2003,16500], [2004,19440], [2005,22870], [2006,27930], [2007,35040], [2008,45470], [2009,51050], [2010,59490], [2011,73140], [2012,83860], [2013,103550], [2011,73140], [2012,83860], [2013,103550], [2011,73140], [2012,83860], [2013,103550], [2011,73140], [2012,83860], [2013,103555]. "EE. UU.", PIB: [[2000,47310], [2001,41590], [2002,39800], [2003,43020], [2004,46550], [2005,45710], [2006,43560], [2007,43560], [2008,48490], [2009,50350], [2010,54950], [2011,59050], [2012,59370], [2013,48980]]}]; var calve1 = loadlineechart ("fillgauge1", dataSet); function newValue () {if (math.random ()> .5) {return math.round (math.random ()*100); } else {return (math.random ()*100) .tofixed (1); }} function Refreshline (GaUGE1) {// Alert ("jeje"); // document.getElementById ("FillGauge1"). InnerHtml = ""; var actualizatedata = [{país: "China", PIB: [[2000, newValue ()], [2001, newValue ()], [2002, newValue ()], [2003, newValue ()], [2004, newValue ()], [2005, newValue () y, [2006, newValue ()], [2007, newValue ()], [2008, newValue ()], [2009, newValue ()], [2010, newValue ()], [2011, newValue ()], [2012, NewValue ()], [2013, NewValue ()]], {país: "USA", GDP: GDP: [[2000, newValue ()], [2001, newValue ()], [2002, newValue ()], [2003, newValue ()], [2004, newValue ()], [2005, NewValue ()], [2006, NewValue ()], [2007, NewValue ()], [2008, NewValue ()], [2009, newValue ()], [2010, newValue ()], [2011, newValue ()], [2012, newValue ()], [2013, newValue ()]]}]; Gauge1.Update (Updateatedata); } self.setinterval ("Refreshline (Gauge1)", 5000); </script> </body> </html>linechart.js 负责加载和刷新折线图
function loadLineChart (elementId, dataSet) {var svg = d3.select ("#" + elementId); var strs = svg.attr ("ViewBox"). Split (""); alerta (conjunto de datos); Var ancho = strs [2]; Var altura = Strs [3]; // 外边框 Var Vadding = {arriba: 50, derecha: 50, abajo: 50, izquierda: 50}; VAR Names = new Array (); // 计算 GDP 的最大值 var gdpmax = 0; for (var i = 0; i <dataSet.length; i ++) {var currgdp = d3.max (dataSet [i] .gdp, function (d) {return d [1];}); if (currgdp> gdpmax) gdpmax = currgdp; } var gdpnumb = dataSet [0] .gdp.length; for (var j = 0; j <gdpnumb; j ++) {nombres [j] = (dataSet [0] .gdp [j]) [0]; } alerta (nombres); var xscale = d3.scale.linear () .domain ([2000, 2013]) .range ([0, ancho - padding.left - padding.right]); // var xscale = d3.scale.ordinal () // .domain (nombres) // .rangeroundbands ([0, ancho - padding.left - padding.right]); var yscale = d3.scale.linear () .domain ([0, gdpmax * 1.1]) .range ([altura - padding.top - padding.bottom, 0]); // 创建一个直线生成器 var linePath = d3.svg.line () .x (function (d) {return xscale (d [0]);}) .y (function (d) {return yscale (d [1]);}) .interpolate ("base"); // 定义两个颜色 Var Colors = [d3.rgb (0, 0, 255), d3.rgb (0, 255, 0)]; // 添加路径 svg.selectall ("ruta") // 选择 <svg> 中所有的 <Path> .data (dataSet) // 绑定数据 .enter () // 选择 Ingrese 部分 .Append ("Path") // 添加足够数量的 <Path> 元素 .attr ("transformar", "Translate (" + Padding.tft + " + Paddop.Top +") ")") "). {return linePath (d.gdp); // 返回直线生成器得到的路径}) .Attr ("relleno", "ninguno") .Attr ("Stroke-width", 3) .Attr ("Stroke", Function (D, I) {Return Colors [i];}); // 添加垂直于 x 轴的对齐线 var vline = svg.append ("línea") .attr ("class", "focusline") .style ("display", "ninguno"); // 添加一个提示框 var tooltip = d3.select ("cuerpo") .append ("div") .attr ("class", "tooltip") .style ("opacidad", 0.0); var title = ToolTip.append ("div") .attr ("class", "title"); var des = tooltip.selectall (". des") .data (dataSet) .enter () .append ("div"); var descolor = des.append ("div") .attr ("clase", "descolor"); var, des. // 添加一个透明的监视鼠标事件用的矩形 svg.append ("rect") .attr ("class", "superpuesto") .attr ("x", padding.left) .attr ("y", padding.top) .attr ("width", width - padding.left - padding.right) .Attr ("altura", altura - padding - padding.bottom). ToolTip.Style ("Left", (d3.event.pagex) + "px") .Style ("top", (d3.event.pagey + 20) + "px") .style ("opacidad", 1.0); vline.Style ("Display", "Ninguno"); function mouseMove () { / * 当鼠标在透明矩形内滑动时调用 * /// 折线的源数组 var data = dataSet [0] .gdp; // 获取鼠标相对于透明矩形左上角的坐标 ， 左上角坐标为 (0,0) var mousex = d3.Mouse (this) [0] - padding.left; var rOusey = d3.Mouse (this) [1] - padding.top; // 通过比例尺的反函数计算原数据中的值 ， 例如 x0 为某个年份 ， y0 为 gdp 值 var x0 = xscale.invert (mousex); var y0 = yscale.invert (mousey); // 对 x0 四舍五入 ， 如果 x0 是 2005.6 ， 则返回 2006 ；如果是 2005.2 ， 则返回 2005 x0 = Math.round (x0); // 查找在原数组中 x0 的值 ， 并返回索引号 var bisect = d3.bisector (función (d) {return d [0];}). Left; Var index = bisect (datos, x0); // 获取年份和 GDP 数据 var año = x0; var gdp = []; for (var k = 0; k <dataSet.length; k ++) {gdp [k] = {país: dataSet [k] .Country, valor: dataSet [k] .gdp [index] [1]}; } // 设置提示框的标题文字（年份） Title.html ("<strong>" + año + "年 </strong>"); // 设置颜色标记的颜色 Descolor.Style ("Color de fondo", función (d, i) {colores de retorno [i];}); // 设置描述文字的内容 Destext.html (function (d, i) {return gdp [i] .country + "/t" + "<strong>" + gdp [i] .value + "</strong>";}); // 设置提示框的位置 ToolTip.Style ("izquierda", (d3.event.pagex) + "px") .style ("top", (d3.event.pagey + 20) + "px"); // 获取垂直对齐线的 x 坐标 var vlx = xscale (datos [índice] [0]) + padding.left; // 设定垂直对齐线的起点和终点 vline.attr ("x1", vlx) .attr ("y1", padding.top) .attr ("x2", vlx) .attr ("y2", altura - padding.bottom); } var markstep = 80; var gmark = svg.selectall (". gmark") .data (dataSet) .enter () .append ("g") .attr ("transformar", function (d, i) {return "traduce (" + (padding.left + i * markstep) + "," + (altura - padding.bottom + 40) + ")";}); gmark.append ("rect") .attr ("x", 0) .attr ("y", 0) .attr ("ancho", 10) .attr ("altura", 10) .attr ("relleno", function (d, i) {devuelve colores [i];}); gmark.append ("text") .attr ("dx", 15) .attr ("dy", ".5em") .attr ("relleno", "negro") .Text (function (d) {return d.country;}); // x 轴 var xaxis = d3.svg.axis () .scale (xscale) .Chicks (5) .TickFormat (d3.format ("d")) .Orient ("fondo"); // y 轴 var yaxis = d3.svg.axis () .scale (yscale) .Orient ("izquierda"); svg.append ("g") .attr ("clase", "eje") .attr ("transformar", "traducir (" + padding.left + "," + (altura - padding.bottom) + ")") .call (xaxis); svg.append ("g") .attr ("clase", "eje y") .attr ("transformar", "traducir (" + padding.left + "," + padding.top + ")") .call (yaxis); function updateLineChart () {this.Update = function (Updateatedata) {//xscale.domain(updatedata,function(d){return d.name}); var numvalues = updatedata.length; var updateategdpmax = 0; for (var i = 0; i <updateatedata.length; i ++) {var currgdp = d3.max (actualizatedata [i] .gdp, function (d) {return d [1];}); if (currgdp> updategdpmax) updategdpmax = currgdp; } yscale = d3.scale.linear () .domain ([0, updategdpmax * 1.1]) .range ([altura - padding.top - padding.bottom, 0]); yaxis = d3.svg.axis () .scale (yscale) .orient ("izquierda"); svg.selectall ("gyaxis") .call (yaxis); svg.selectall ("ruta") // 选择 <svg> 中所有的 <path> .data (actualizado) // 绑定数据 .transition () .duration (2000) .ease ("lineal") .attr ("d", function (d) {return linepath (d.gdp); //}}); }} return nuevo updateLineChart ();}刚开始数据刷新了但是坐标轴木有刷新
引入
svg.selectall ("gyaxis") .call (yaxis);以上就是 D3.js 实现实时刷新折线图的全部内容 ， 希望给大家学习 D3.js 带来帮助。