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| Ext.require([
| 'Ext.window.Window',
| 'Ext.chart.*'
| ]);
|
| Ext.onReady(function () {
| var chart, timeAxis;
|
| var generateData = (function() {
| var data = [], i = 0,
| last = false,
| date = new Date(2011, 1, 1),
| seconds = +date,
| min = Math.min,
| max = Math.max,
| random = Math.random;
| return function() {
| data = data.slice();
| data.push({
| date: Ext.Date.add(date, Ext.Date.DAY, i++),
| visits: min(100, max(last? last.visits + (random() - 0.5) * 20 : random() * 100, 0)),
| views: min(100, max(last? last.views + (random() - 0.5) * 10 : random() * 100, 0)),
| veins: min(100, max(last? last.veins + (random() - 0.5) * 20 : random() * 100, 0))
| });
| last = data[data.length -1];
| return data;
| };
| })();
|
| var group = false,
| groupOp = [{
| dateFormat: 'M d',
| groupBy: 'year,month,day'
| }, {
| dateFormat: 'M',
| groupBy: 'year,month'
| }];
|
| function regroup() {
| group = !group;
| var axis = chart.axes.get(1),
| selectedGroup = groupOp[+group];
| axis.dateFormat = selectedGroup.dateFormat;
| axis.groupBy = selectedGroup.groupBy;
|
| chart.redraw();
| }
|
| var store = Ext.create('Ext.data.JsonStore', {
| fields: ['date', 'visits', 'views', 'veins'],
| data: generateData()
| });
|
| var intr = setInterval(function() {
| var gs = generateData();
| var toDate = timeAxis.toDate,
| lastDate = gs[gs.length - 1].date,
| markerIndex = chart.markerIndex || 0;
| if (+toDate < +lastDate) {
| markerIndex = 1;
| timeAxis.toDate = lastDate;
| timeAxis.fromDate = Ext.Date.add(Ext.Date.clone(timeAxis.fromDate), Ext.Date.DAY, 1);
| chart.markerIndex = markerIndex;
| }
| store.loadData(gs);
| }, 100);
|
| var win = Ext.create('Ext.window.Window', {
| width: 800,
| height: 600,
| minHeight: 400,
| minWidth: 550,
| maximizable: true,
| title: 'Live Updated Chart',
| layout: 'fit',
| items: [{
| xtype: 'chart',
| style: 'background:#fff',
| store: store,
| itemId: 'chartCmp',
| axes: [{
| type: 'Numeric',
| minimum: 0,
| maximum: 100,
| position: 'left',
| fields: ['views', 'visits', 'veins'],
| title: 'Number of Hits',
| grid: {
| odd: {
| fill: '#dedede',
| stroke: '#ddd',
| 'stroke-width': 0.5
| }
| }
| }, {
| type: 'Time',
| position: 'bottom',
| fields: 'date',
| title: 'Day',
| dateFormat: 'M d',
| groupBy: 'year,month,day',
| aggregateOp: 'sum',
|
| constrain: true,
| fromDate: new Date(2011, 1, 1),
| toDate: new Date(2011, 1, 7)
| }],
| series: [{
| type: 'line',
| axis: ['left', 'bottom'],
| xField: 'date',
| yField: 'visits',
| label: {
| display: 'none',
| field: 'visits',
| renderer: function(v) { return v >> 0; },
| 'text-anchor': 'middle'
| },
| markerConfig: {
| radius: 5,
| size: 5
| }
| },{
| type: 'line',
| axis: ['left', 'bottom'],
| xField: 'date',
| yField: 'views',
| label: {
| display: 'none',
| field: 'visits',
| renderer: function(v) { return v >> 0; },
| 'text-anchor': 'middle'
| },
| markerConfig: {
| radius: 5,
| size: 5
| }
| },{
| type: 'line',
| axis: ['left', 'bottom'],
| xField: 'date',
| yField: 'veins',
| label: {
| display: 'none',
| field: 'visits',
| renderer: function(v) { return v >> 0; },
| 'text-anchor': 'middle'
| },
| markerConfig: {
| radius: 5,
| size: 5
| }
| }]
| }]
| }).show();
| chart = win.child('#chartCmp');
| timeAxis = chart.axes.get(1);
| });
|
|
