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June 21, 2019 20:51
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d3.js v5 Multiformat for datetime scale
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>d3.js v5 Multiformat Date axis</title> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/5.9.2/d3.min.js"></script> | |
| <link rel="stylesheet" href="style.css" > | |
| </head> | |
| <body> | |
| <div id="d3_chart"></div> | |
| <script src="scripts.js"></script> | |
| <script type="text/javascript"> | |
| function autorun() | |
| { | |
| D3_CHART.init(); | |
| } | |
| if (document.addEventListener) document.addEventListener("DOMContentLoaded", autorun, false); | |
| else if (document.attachEvent) document.attachEvent("onreadystatechange", autorun); | |
| else window.onload = autorun; | |
| </script> | |
| </body> | |
| </html> |
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| var D3_CHART = { | |
| selector: '#d3_chart', | |
| data:null, | |
| svg: null, | |
| mainGroup: null, | |
| scaleX: null, | |
| options:{ | |
| width: 640, | |
| height: 480, | |
| margins: { | |
| top: 20, | |
| right: 40, | |
| bottom: 20, | |
| left: 40, | |
| }, | |
| }, | |
| redraw: function(){ | |
| this.init(); | |
| this.draw(); | |
| }, | |
| init: function(){ | |
| var el = d3.select(this.selector); | |
| if(el.empty()){ | |
| console.warn('init(): Element for "'+this.selector+'" selector not found'); | |
| return; | |
| } | |
| console.log(d3.version); | |
| this.scaleX = d3.scaleTime().rangeRound([0, this.options.width - this.options.margins.left - this.options.margins.right]); | |
| this.svg = el | |
| .append("svg") | |
| .attr('xmlns', 'http://www.w3.org/2000/svg') | |
| .attr("width", this.options.width) | |
| .attr("height", this.options.height); | |
| this.mainGroup = this.svg.append('g') | |
| .attr('transform', 'translate(' + this.options.margins.left + ',' + this.options.margins.top + ')'); | |
| var periods = [ | |
| { | |
| 'text': 'Seconds', | |
| 'from': new Date('2019-06-21T08:58:55'), | |
| 'to': new Date('2019-06-21T08:59:06') | |
| }, | |
| { | |
| 'text': 'Minutes', | |
| 'from': new Date('2019-06-21T08:55:00'), | |
| 'to': new Date('2019-06-21T09:06:00') | |
| }, | |
| { | |
| 'text': 'Hours', | |
| 'from': new Date('2019-06-21T09:00:00'), | |
| 'to': new Date('2019-06-21T14:00:00') | |
| }, | |
| { | |
| 'text': 'Days', | |
| 'from': new Date('2019-06-24T09:00:00'), | |
| 'to': new Date('2019-07-04T09:00:00') | |
| }, | |
| { | |
| 'text': 'Months', | |
| 'from': new Date('2019-06-24T09:00:00'), | |
| 'to': new Date('2020-04-24T09:00:00') | |
| }, | |
| { | |
| 'text': 'Years', | |
| 'from': new Date('2009-06-24T09:00:00'), | |
| 'to': new Date('2020-04-24T09:00:00') | |
| } | |
| ]; | |
| for(var i=0; i < periods.length; i++){ | |
| // seconds | |
| var xMin = periods[i]['from']; | |
| var xMax = periods[i]['to']; | |
| this.scaleX.domain([xMin, xMax]); | |
| var yText = (this.options.height - (1 - i*0.2)*this.options.height); | |
| var yScale = yText + 20; | |
| this.mainGroup.append("g") | |
| .attr("class", "axis x") | |
| .attr("transform", "translate(0," + yScale + ")") | |
| .call(d3.axisBottom(this.scaleX).ticks(8).tickFormat(this.multiFormat)); | |
| this.mainGroup.append("text") | |
| .attr("x", 25) | |
| .attr("y", yText) | |
| .attr("dy", ".35em") | |
| .text(periods[i]['text']); | |
| } | |
| }, | |
| clearChart: function(){ | |
| var el = d3.select(this.selector); | |
| if(el.empty()){ | |
| console.warn('clearChart(): Element for "'+this.selector+'" selector not found'); | |
| return; | |
| } | |
| // clear element | |
| el.html(""); | |
| }, | |
| multiFormat: function (date) { | |
| // Establish the desired formatting options using locale.format(): | |
| // https://github.com/d3/d3-time-format/blob/master/README.md#locale_format | |
| var formatMillisecond = d3.timeFormat(".%L"), | |
| formatSecond = d3.timeFormat(":%S"), | |
| formatMinute = d3.timeFormat("%I:%M"), | |
| formatHour = d3.timeFormat("%I:%M %p"), | |
| formatDay = d3.timeFormat("%a %d"), | |
| formatWeek = d3.timeFormat("%b %d"), | |
| formatMonth = d3.timeFormat("%B"), | |
| formatYear = d3.timeFormat("%Y"); | |
| return (d3.timeSecond(date) < date ? formatMillisecond | |
| : d3.timeMinute(date) < date ? formatSecond | |
| : d3.timeHour(date) < date ? formatMinute | |
| : d3.timeDay(date) < date ? formatHour | |
| : d3.timeMonth(date) < date ? (d3.timeWeek(date) < date ? formatDay : formatWeek) | |
| : d3.timeYear(date) < date ? formatMonth | |
| : formatYear)(date); | |
| } | |
| }; |
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| *{} |
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