YouTip

[Highcharts Gauge](#) The following example demonstrates a clock. We have already learned the basic configuration syntax of Highcharts in the previous chapters. Next, let's look at other configurations. * * * ## Configuration ### chart.type Configuration Configure the chart's type as 'gauge'. chart.type describes the chart type. The default value is "line". var chart = { type: 'gauge'}; ### pane Configuration The pane is only applicable to polar charts and angular gauges. This configurable object holds the general options for combining the x-axis and y-axis. Each x-axis and y-axis can be associated with a pane via an index. var pane = { startAngle: -150, // The starting degree of the x-axis or gauge axis, given in degrees. 0 is north endAngle: 150 // The ending degree of the x-axis polar or angular axis, given in degrees. 0 is north}; ### Example Filename: highcharts_guage_clock.htm $(document).ready(function() { /** * Get current time */ function getNow() { var now = new Date(); return { hours: now.getHours() + now.getMinutes() / 60, minutes: now.getMinutes() * 12 / 60 + now.getSeconds() * 12 / 3600, seconds: now.getSeconds() * 12 / 60 }; } /** * Pad numbers */ function pad(number, length) { // Create an array of the remaining length + 1 and join it with 0's return new Array((length || 2) + 1 - String(number).length).join(0) + number; } var now = getNow(); var chart = { type: 'gauge', plotBackgroundColor: null, plotBackgroundImage: null, plotBorderWidth: 0, plotShadow: false, height: 200 }; var credits = { enabled: false }; var title = { text: 'Highcharts Clock' }; var pane = { background: [{ // default background }, { // reflex for supported browsers backgroundColor: Highcharts.svg ? { radialGradient: { cx: 0.5, cy: -0.4, r: 1.9 }, stops: [ [0.5, 'rgba(255, 255, 255, 0.2)'], [0.5, 'rgba(200, 200, 200, 0.2)'] ] } : null }] }; // the value axis var yAxis = { labels: { distance: -20 }, min: 0, max: 12, lineWidth: 0, showFirstLabel: false, minorTickInterval: 'auto', minorTickWidth: 1, minorTickLength: 5, minorTickPosition: 'inside', minorGridLineWidth: 0, minorTickColor: '#666', tickInterval: 1, tickWidth: 2, tickPosition: 'inside', tickLength: 10, tickColor: '#666', title: { text: 'Powered by
Highcharts', style: { color: '#BBB', fontWeight: 'normal', fontSize: '8px', lineHeight: '10px' }, y: 10 } }; var tooltip = { formatter: function () { return this.series.chart.tooltipText; } }; var series= [{ data: [{ id: 'hour', y: now.hours, dial: { radius: '60%', baseWidth: 4, baseLength: '95%', rearLength: 0 } }, { id: 'minute', y: now.minutes, dial: { baseLength: '95%', rearLength: 0 } }, { id: 'second', y: now.seconds, dial: { radius: '100%', baseWidth: 1, rearLength: '20%' } }], animation: false, dataLabels: { enabled: false } }]; var json = {}; json.chart = chart; json.credits = credits; json.title = title; json.pane = pane; json.yAxis = yAxis; json.tooltip = tooltip; json.series = series; $('#container').highcharts(json, chartFunction); // Add some life var chartFunction = function (chart) { setInterval(function () { now = getNow(); var hour = chart.get('hour'), minute = chart.get('minute'), second = chart.get('second'), // run animation unless we're wrapping around from 59 to 0 animation = now.seconds === 0 ? false :{ easing: 'easeOutElastic'}; // Cache the tooltip text chart.tooltipText = pad(Math.floor(now.hours), 2) + ':' + pad(Math.floor(now.minutes * 5), 2) + ':' + pad(now.seconds * 5, 2); hour.update(now.hours, true, animation); minute.update(now.minutes, true, animation); second.update(now.seconds, true, animation); }, 1000); };});// Extend jQuery with some easing (copied from jQuery UI) $.extend($.easing, { easeOutElastic: function (x, t, b, c, d) { var s=1.70158;var p=0;var a=c; if (t==0) return b; if ((t/=d)==1) return b+c; if (!p) p=d*.3; if (a < Math.abs(c)) { a=c; var s=p/4; } else var s = p/(2*Math.PI) * Math.asin (c/a); return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b; }}); The output of the above example is: [Highcharts Gauge](#)