<html>
	<head>
		<title>Getting percent value changes information</title>
		<meta http-equiv="content-type" content="text/html;charset=utf-8"/>	
		<script type="text/javascript" language="javascript" src="./../js/AnyChartStock.js?v=1.9.0r9317"></script>
		<!-- chart size settings -->
		<style type="text/css">
			#chartContainer {
				width: 800px;
				height: 550px;
				float: left;
			}
		</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");
			// Setting XML config file.
			chart.setXMLFile("config.xml");
			// Writing the flash object into the page DOM.
			chart.write("chartContainer");
			
			//--------------------------------------------------------------------------------
			//		Auxiliary Functions
			//--------------------------------------------------------------------------------
            
			// Rounding and adding "+" to positive values
			function formatNumber(val) {
				var value = Math.round(val * 100) / 100;
				if (value > 0) return "+" + value + "%";
					else return value + "%";	
			}
			
			//--------------------------------------------------------------------------------
			//		Show Values Functions
			//--------------------------------------------------------------------------------
			
			/*
				Value Change show Functions
			 */
			function showInfo(showCurrent) {
				// values are obtained using getSeriesPercentValueChange
				var info = chart.getSeriesPercentValueChange("idMainChart","idSeriesA");
				
				document.getElementById("valCurrent").innerHTML = (showCurrent && info.current != undefined && !isNaN(info.current)) ? formatNumber(info.current) : "N/A"; // current percent change
				document.getElementById("valMin").innerHTML = formatNumber(info.min); // minimal percent change
				document.getElementById("valMinVisible").innerHTML = formatNumber(info.minVisible); // maximal percent change in visible range
				document.getElementById("valMax").innerHTML = formatNumber(info.max); // maximal percent change
				document.getElementById("valMaxVisible").innerHTML = formatNumber(info.maxVisible); // maximal visible percent change
				document.getElementById("valFirst").innerHTML = formatNumber(info.first); // percent change in first point
				document.getElementById("valFirstVisible").innerHTML = formatNumber(info.firstVisible); // percent change in first visible point
				document.getElementById("valLast").innerHTML = formatNumber(info.last); // percent change in last point
				document.getElementById("valLastVisible").innerHTML = formatNumber(info.lastVisible); // percent change in last visible point
			}
			
			//--------------------------------------------------------------------------------
			//		Events handling
			//--------------------------------------------------------------------------------
			
			// onChartDraw event handler
			chart.onChartDraw = function() {
				showInfo(false);
			};
			
			// onSelectedRangeChange event handler
			chart.onSelectedRangeChange = function() {
				showInfo(false);
			};
			
			// onChartMouseOver event handler
			chart.onChartMouseOver = function() {
				showInfo(true);
			};
			
			// onChartMouseOut event handler
			chart.onChartMouseOut = function() {
				showInfo(false);
			};
			
			// onChartMouseMove event handler
			chart.onChartMouseMove = function() {
				showInfo(true);
			};
		</script>
		<!-- style 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">
			<tr>
				<th colspan="2">On mouse over values:</th>
			</tr>
			<tr>
				<td width="200">Hovered Point:</td>
				<td width="100" id="valCurrent"></td>
			</tr>
			<tr>
				<th colspan="2">Full range info</th>
			</tr>
			<tr>
				<td>Min:</td>
				<td id="valMin"></td>
			</tr>
			<tr>
				<td>Max:</td>
				<td id="valMax"></td>
			</tr>
			<tr>
				<td>First:</td>
				<td id="valFirst"></td>
			</tr>
			<tr>
				<td>Last:</td>
				<td id="valLast"></td>
			</tr>
			<tr>
				<th colspan="2">Visible data range</th>
			</tr>
			<tr>
				<td>Min visible:</td>
				<td id="valMinVisible"></td>
			</tr>
			<tr>
				<td>Max visible:</td>
				<td id="valMaxVisible"></td>
			</tr>
			<tr>
				<td>First visible:</td>
				<td id="valFirstVisible"></td>
			</tr>
			<tr>
				<td>Last visible:</td>
				<td id="valLastVisible"></td>
			</tr>
		</table>
	</body>
</html>

Sample Description

How to use this sample?

Hover points and/or change selected range using any method and see value details in the table to the right of the chart.

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How it works

This sample handles onChartMouseMove, onChartMouseOut, onChartMouseOver, onChartDraw and onSelectedRangeChange events and invokes getSeriesPercentValueChange method to obtain percent changes details.

This method is intened to obtain percent changes amount when chart is using "PercentChanges" scale mode.

To understand everything about obtaining actual chart data refer to Obtaining Actual Chart Information article.

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AnyChartStock JavaScript API

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

Item Type Description
getSeriesPercentValueChange Method Gets info about a percent change of "value" (or "close" field, if "value" field is not specified) series field values.
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.
onChartMouseMove Event This event is dispatched when the mouse is moving over the chart plotting area.
onChartMouseOut Event This event is dispatched when the mouse leaves the chart plotting area.
onChartMouseOver Event This event is dispatched when the chart plotting area is hovered by the mouse.
onSelectedRangeChange Event This event is dispatched when the selected range of the chart is changed.

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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

  • 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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