<html>
	<head>
		<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
		<title>Data Manipulation Operations Grouping</title>
		<script type="text/javascript" language="javascript" src="./../js/AnyChartStock.js?v=1.9.0r9317"></script>
		<script type="text/javascript" language="javascript" src="./js/Randomizer.js"></script>
		<style type="text/css">
			#chartContainer {
				width: 800px;
				height: 400px;
			}
		</style>
		<style type="text/css">
			table .commands {
				border-style: solid;
				border-width: 1px;
				border-color: #D0CDC9;
			}
			tr .header {
				background-color: #DCD9D5;
			}
			tr .content{
				background-color: #F8F4F0;
			}
		</style>

		<script type="text/javascript" language="javascript">
			// Creating new chart object. 
			var chart = new AnyChartStock("./../swf/AnyChartStock.swf?v=1.9.0r9317", "./../swf/Preloader.swf?v=1.9.0r9317");
			// Writing the flash object into the page DOM.
			chart.write("chartContainer");
			
			//--------------------------------------------------------------------------------
			//		Data sets info
			//--------------------------------------------------------------------------------
			
			// ds1 data set information
			var dataSet1Info = {
				id: "ds1", // id
				start: null, // start date
				end: null, // end date
				lastValue: NaN, // last value
				randomizer: new Randomizer(31.39, 30, 33, .1) // randomizer
			};
			
			// ds2 data set information
			var dataSet2Info = {
				id: "ds2", // id
				start: null, // start date
				end: null, // end date
				lastValue: NaN, // last value
				randomizer: new Randomizer(28.24, 26.5, 29.5, .1) // randomizer
			};
			
			// ds3 data set information
			var dataSet3Info = {
				id: "ds3", // id
				start: null, // start date
				end: null, // end date
				lastValue: NaN, // last value
				randomizer: new Randomizer(30.16, 28.6, 31.6, .1) // randomizer
			};
			
			// reset data sets information
			reset();
			
			// function to reset data sets information and config
			function reset() {
				
				// onChartDraw handler
				chart.onChartDraw = function() {
					dataSet1Info.start = chart.getFirstDate(); // data set ds1 start date
					dataSet2Info.start = new Date(dataSet1Info.start.getTime()); // data set ds2 start date
					dataSet3Info.start = new Date(dataSet1Info.start.getTime()); // data set ds3 start date
				
					dataSet1Info.end = chart.getLastDate(); // data set ds1 end date
					dataSet2Info.end = new Date(dataSet1Info.end.getTime()); // data set ds2 end date
					dataSet3Info.end = new Date(dataSet1Info.end.getTime()); // data set ds3 end date
					
					dataSet1Info.lastValue = chart.getSeriesValue("idMainChart","s1").last; // last value of ds1
					dataSet2Info.lastValue = chart.getSeriesValue("idMainChart","s2").last; // last value of ds2
					dataSet3Info.lastValue = chart.getSeriesValue("idMainChart","s3").last; // last value of ds3
					
					chart.onChartDraw = null;
				};
				
				// reset config file
				chart.setXMLFile("config.xml");
			}
			
			//--------------------------------------------------------------------------------
			//		Auxiliary Functions
			//--------------------------------------------------------------------------------
			
			// Function to create a point with random value at the end of the data set
			function createPoint(dsInfo) {
				dsInfo.end.setUTCMinutes(dsInfo.end.getUTCMinutes() + 1); // date increment
				dsInfo.lastValue = dsInfo.randomizer.next(); // generate random value
				return (dsInfo.end.getTime()/1000).toString()+","+dsInfo.lastValue+"\n"; // csv row
			}
			
			//--------------------------------------------------------------------------------
			//		Actions
			//--------------------------------------------------------------------------------
			
			// cmd1 - Add 30 points to the end of each data set.
			function cmd1() {
				// csv data strings
				var csv1Data = "";
				var csv2Data = "";
				var csv3Data = "";
				
				// random points generation
				for (var i = 0;i<30;i++) {
					csv1Data += createPoint(dataSet1Info);
					csv2Data += createPoint(dataSet2Info);
					csv3Data += createPoint(dataSet3Info);
				}
				
				// append random data to datasets
				chart.appendData(dataSet1Info.id, csv1Data);
				chart.appendData(dataSet2Info.id, csv2Data);
				chart.appendData(dataSet3Info.id, csv3Data);
				
				// apply data changes
				chart.commitDataChanges();
			}
			
			// cmd2 - Remove 30 points from the beginning and add 30 points to the end of each data set.
			function cmd2() {
				// csv data strings
				var csv1Data = "";
				var csv2Data = "";
				var csv3Data = "";
				
				// random points generation
				for (var i = 0;i<30;i++) {
					csv1Data += createPoint(dataSet1Info);
					csv2Data += createPoint(dataSet2Info);
					csv3Data += createPoint(dataSet3Info);
				}
				
				// append random data to datasets and remove first 30 points from each data set
				chart.appendData(dataSet1Info.id, csv1Data, 30);
				chart.appendData(dataSet2Info.id, csv2Data, 30);
				chart.appendData(dataSet3Info.id, csv3Data, 30);
				
				// update info about data sets start dates (add 30 minutes)
				dataSet1Info.start.setUTCMinutes(dataSet1Info.start.getUTCMinutes()+30);
				dataSet2Info.start.setUTCMinutes(dataSet2Info.start.getUTCMinutes()+30);
				dataSet3Info.start.setUTCMinutes(dataSet3Info.start.getUTCMinutes()+30);
				
				// apply data changes
				chart.commitDataChanges();
			}
			
			// auxiliary function to populate dataSet with random values
			function fillDataSet(dataSetInfo) {
				// csv data string
				var csvData = "";
				
				// loop through all dates in dataset and create new random point
				var targetEnd = new Date(dataSetInfo.end.getTime());
				dataSetInfo.end = new Date(dataSetInfo.start.getTime());
				
				while (dataSetInfo.end < targetEnd)
					csvData += createPoint(dataSetInfo);
				
				// add data into data set
				chart.appendData(dataSetInfo.id, csvData);
			}
			
			// cmd3 - Remove all points from all data sets and populate them with new random data.
			function cmd3() {
				// remove all points from each data set
				chart.removeDataRange(dataSet1Info.id, dataSet1Info.start, dataSet1Info.end);
				chart.removeDataRange(dataSet2Info.id, dataSet2Info.start, dataSet2Info.end);
				chart.removeDataRange(dataSet3Info.id, dataSet3Info.start, dataSet3Info.end);
				
				// populate data sets with random data
				fillDataSet(dataSet1Info);
				fillDataSet(dataSet2Info);
				fillDataSet(dataSet3Info);
				
				// apply data changes
				chart.commitDataChanges();
			}
			
			
		</script>
		
		<!-- table settings -->
		<style type="text/css">
			table.settings {
				border-style: solid;
				border-width: 1px;
				border-color: #D0CDC9;
			}

			table.settings tr th {
				font:normal 60% Verdana;
				background-color: #DCD9D5;
				font-weight:bold;
				padding-bottom:5px;
				padding-top:5px;
				padding-left:10px;
				text-align:left;
			}
			table.settings tr td {
				background-color: #F8F4F0;
				font:normal 70% Verdana;
				padding-bottom:2px;
				padding-top:2px;
				padding-left:10px;
				text-align:left;	
			}
		</style>
	</head>
	<body>
		<div id="chartContainer"><!-- Chart Container --></div>
		<table class="settings" width="800">
			<tr>
				<th width="55">Cmd#</th>
				<th>Description</th>
				<th>Command Execution</th>
			</tr>
			<tr>
				<td>Cmd 1</td>
				<td>Add 30 points to the end of each data set.</td>
				<td><input type="button" value="Exec" onclick="cmd1()" /></td>
			</tr>
			<tr>
				<td>Cmd 2</td>
				<td>Remove 30 points from the beginning and add 30 points to the end of each data set.</td>
				<td><input type="button" value="Exec" onclick="cmd2()" /></td>
			</tr>
			<tr>
				<td>Cmd 3</td>
				<td>Remove all points from all data sets and populate them with new random data.</td>
				<td><input type="button" value="Exec" onclick="cmd3()" /></td>
			</tr>
			<tr>
				<td>Reset</td>
				<td>Reset all changes. </td>
				<td><input type="button" value="Reset" onclick="reset()"/></td>
		</table>
	</body>
</html>

Sample Description

How to use this sample?

Click any of the buttons below the chart to execute groups of data manipulation commands or use "Reset" button to set initial state.

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How it works

AnyChart Stock component gives you the ability to add, remove or modify data points in real-time without full chart reloading and redrawing - you can do just what you need in a fast and flexible way.

This sample studies the use of appendData, removeDataRow, removeDataRange methods. In all these methods you should specify the name of the data set you want to change, which means that one call of each method changes only one data set, and they should be called several times to change several data sets. Also, all these methods are based on deferred application principle, that allows to make several modifications in one or several data sets and then apply them at one time using commitDataChanges function.

Every "command", that is launched upon button click is actually a group of data manipulation methods that ends with commitDataChanges.

You can learn everything you need to know about real-time data streaming and update in Real-Time Data Streaming and Data Manipulations article.

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AnyChartStock JavaScript API

This sample uses the following methods, properties and events from AnyChartStock JavaScript API:

Item Type Description
appendData Method Appends data to the chart.
commitDataChanges Method Commits data appends and data points erasure made by appendData(), removeDataRow() and removeDataRange() method calls.
getFirstDate Method Gets the first date of all used by visible series data sources.
getLastDate Method Gets the last date from all mapped and used by visible series data sources.
getSeriesValue Method Gets info about "value" (or "close" field, if "value" field is not specified) series field.
removeDataRange Method Removes data range from a data set by the range of dates.
setXMLFile Method Sets chart XML configuration file path.
write Method Adds the chart to HTML DOM as a child of the specified container.
onChartDraw Event This event is dispatched when the AnyChart Stock is drawn.

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Prerequisites

This section lists all configuration, data and auxiliary files required for this sample.

Configuration file

CSV files

SWF files

  • AnyChartStock.swf - AnyChart Stock component.
  • Preloader.swf - AnyChart Stock helper component that loads the main component (AnyChartStock.swf) and displays loading progress.

JavaScript Libraries

  • Randomizer.js - A sample JavaScript library that generates random values.
  • AnyChartStock.js - A JavaScript library that is shipped with AnyChart Stock component. It is used to embed the component into HTML DOM and to comunicate with the Flash part.

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