jQWidgets is a JavaScript framework for making web-based applications for PC and mobile devices. It is a very powerful and optimized framework, platform-independent, and widely supported. jqxChart is a lightweight and powerful chart widget written 100% in javascript. It offers many advanced features and supports three different rendering technologies – SVG, HTML5 Canvas & VML.
The getItemCoord() method is used to get the coordinates for a data point. It takes the groupIndex, serieIndex, and itemIndex type as parameters of the number type, and returns the coordinates as an object type.
Syntax:
var getItemCoord = chartInstance.getItemCoord(0, 1, position);
Linked Files: Download jQWidgets from the link. In the HTML file, locate the script files in the downloaded folder:
<link rel=”stylesheet” href=”jqwidgets/styles/jqx.base.css” type=”text/css” />
<script type=”text/javascript” src=”scripts/jquery-1.11.1.min.js”></script>
><script type=”text/javascript” src=”jqwidgets/jqxcore.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxchart.core.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxdraw.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxdata.js”></script>
Example: The below example illustrates the jqxHeatMap getItemCoord() method in jQWidgets:
<!DOCTYPE html> < html lang = "en" >
< head >
< link rel = "stylesheet"
href = "jqwidgets/styles/jqx.base.css" type = "text/css" />
< script type = "text/javascript"
src = "scripts/jquery-1.11.1.min.js" >
</ script >
< script type = "text/javascript" src = "jqwidgets/jqxcore.js" >
</ script >
< script type = "text/javascript" src = "jqwidgets/jqxchart.core.js" >
</ script >
< script type = "text/javascript" src = "jqwidgets/jqxchart.api.js" >
</ script >
< script type = "text/javascript"
src = "jqwidgets/jqxdraw.js" >
</ script >
< script type = "text/javascript"
src = "jqwidgets/jqxdata.js" >
</ script >
</ head >
< body >
< center >
< h1 style = "color: green" >
GeeksforGeeks
</ h1 >
< h3 >jQWidgets jqxChart getItemCoord() method</ h3 >
< div class = 'default' ></ div >
< button id = 'gfg' >Click Here</ button >
< div id = 'gfg1' style = "width:600px; height: 400px" />
</ center >
< script type = "text/javascript" >
$(document).ready(function () {
var json = [
{ Day:'Monday', A:3, B:1, C: 2, D:1},
{ Day:'Tuesday', A:3, B:1, C: 2, D:1},
{ Day:'Wednesday', A:3, B:1, C: 2, D:1},
{ Day:'Thursday', A:3, B:1, C: 2, D:1},
{ Day:'Friday', A:3, B:1, C: 2, D:1},
{ Day:'Saturday', A:3, B:1, C: 2, D:1},
{ Day:'Sunday', A:3, B:1, C: 2, D:1}
];
var obj = {
title: "Coding Score",
description: "Coding Questions Solved Daily",
source: json,
toolTipMoveDuration: 1000,
categoryAxis:
{
dataField: 'Day',
showGridLines: true
},
seriesGroups:[{
type: 'column',
columnsGapPercent: 30,
seriesGapPercent: 0,
valueAxis: {
minValue: 0,
maxValue: 10,
unitInterval: 10,
description: 'Questions Solved'
},
series: [
{ dataField: 'A', displayText: 'A'},
{ dataField: 'B', displayText: 'B'},
{ dataField: 'C', displayText: 'C'},
{ dataField: 'D', displayText:'D' }
]
}]
};
$('#gfg1').jqxChart(obj);
$('#gfg').click(function () {
var chartInstance =
$('#gfg1').jqxChart('getInstance');
var xval = chartInstance.getItemCoord(0, 1, 1);
console.log(xval);
});
});
</ script >
</ body >
</ html >
|
Output:
Reference: https://www.jqwidgets.com/jquery-widgets-documentation/documentation/jqxchart/jquery-chart-api.htm