Radial Gauge

Linear Gauge

Bullet Graph

Segmented Display


Click on the button to see me

This sample demonstrates how to get DataViz LinearGauge image data URL.
The DataViz LinearGauge can export its image to a data URL (e.g., data:image/png;base64,iVBORw0KGg...). This data may then be rendered in the browser, which could then be saved.

For detailed implementation, please take a look at the HTML code tab. 
 
<!DOCTYPE html>
<html>
<head>
	<title>
	Get Image Data URL Example - HTML5 jQuery Linear Gauge JavaScript Plugin
</title>
	<link rel="stylesheet" type="text/css" href="../../css/dataviz.gauges.css" />
	<script src="../../js/dataviz.gauges.min.js" type="text/javascript"></script>
	
	<script lang="javascript" type="text/javascript">
		var gradient1 = {
			type: 'linearGradient',
			x0: 0.5,
			y0: 0,
			x1: 0.5,
			y1: 1,
			colorStops: [{ offset: 0, color: '#C5F80B' },
						 { offset: 1, color: '#6B8901' }]
		};

		var gradient2 = {
			type: 'linearGradient',
			x0: 0.5,
			y0: 0,
			x1: 0.5,
			y1: 1,
			colorStops: [{ offset: 0, color: '#FF3366' },
						 { offset: 1, color: '#B2183E' }]
		};

		var gradient3 = {
			type: 'linearGradient',
			x0: 0.5,
			y0: 0,
			x1: 0.5,
			y1: 1,
			colorStops: [{ offset: 0, color: '#339CFF' },
						 { offset: 1, color: '#1F66A8' }]
		};

		var needleGradient = {
			type: 'linearGradient',
			x0: 0,
			y0: 0.5,
			x1: 1,
			y1: 0.5,
			colorStops: [{ offset: 0, color: '#4F6169' },
						 { offset: 1, color: '#252E32' }]
		};


		var linearGauge = new DataViz.LinearGauge({
			orientation: 'horizontal',
			background: '#F7F7F7',
			border: {
				padding: 10,
				lineWidth: 4,
				strokeStyle: '#76786A'
			},
			tooltips: {
				disabled: false,
				highlighting: true
			},
			scales: [
					 {
					 	minimum: 0,
					 	maximum: 100,
					 	labels: {
					 		offset: 0.16
					 	},
					 	majorTickMarks: {
					 		length: 10,
					 		offset: 0.28,
					 		lineWidth: 2
					 	},
					 	minorTickMarks: {
					 		length: 6,
					 		visible: true,
					 		interval: 2,
					 		offset: 0.34,
					 		lineWidth: 2
					 	},
					 	ranges: [
									{
										startValue: 0,
										endValue: 40,
										innerOffset: 0.46,
										outerStartOffset: 0.64,
										outerEndOffset: 0.75,
										fillStyle: gradient1
									},
									{
										startValue: 40,
										endValue: 70,
										innerOffset: 0.46,
										outerStartOffset: 0.75,
										outerEndOffset: 0.84,
										fillStyle: gradient2
									},
									{
										startValue: 70,
										endValue: 100,
										innerOffset: 0.46,
										outerStartOffset: 0.84,
										outerEndOffset: 0.90,
										fillStyle: gradient3
									}
					 	],
					 	needles: [
								   {
								   	type: 'pointer',
								   	value: 80,
								   	fillStyle: needleGradient,
								   	innerOffset: 0.50,
								   	outerOffset: 1.00
								   }
					 	]
					 }
			]
		});

		function toDataURL() {
			var dataURL = linearGauge.toDataURL('image/png');
			document.getElementById("canvasImg").src = dataURL;
		}

		linearGauge.write('container');
	</script>

</head>
<body>
	<div>
		<input id="button" onclick="toDataURL()" type="button" value="Click to view the chart as an image" />
		<br />
		<table>
			<tr>
				<td>
					<div id="container" style="width: 400px; height: 100px;">
					</div>
				</td>
			</tr>
			<tr>
				<td>
					<img src="" style="width: 400px; height: 100px;" id="canvasImg" alt="Click on the button to see me" />
				</td>
			</tr>
		</table>
	</div>
</body>
</html>