forked:Visualization Map Generator For Statistical Data｜Mash up the Linked Open Data

var drawMarkersMap = function(rawData) {
	if(! rawData) {
		rawData =[];
	}
	var data = google.visualization.arrayToDataTable(rawData);

var options = {backgroundColor : '#0B173B', minValue: 0,  colors: ['#F2F5A9', '#04B431']};
    var chart = new google.visualization.GeoChart(document.getElementById('paintedMap'));
    chart.draw(data, options);
}
	
	google.load('visualization', '1', {packages: ['geochart']});
	google.setOnLoadCallback(drawMarkersMap);

window.onload = function() {
	GenerateHeatmap.initFileList();
};

GenerateHeatmap = {};
GenerateHeatmap.fileName = "";

GenerateHeatmap.initFileList = function(){
	var sb =[];
	$.each(LinkData.getWorks(), function(workKey, workValue) {
		$.each(LinkData.getFiles(workValue), function(fileKey, fileValue) {
			sb[sb.length] = "<option value=\"" + fileValue + "\">"+ fileValue +"</option>";
		});
	});
	
	$("#fileOptions").append(sb.join(""));
	$("#fileOptions").change(GenerateHeatmap.drawMap);	
	$("#generate").click(generatePng);
	$("#generate").click(function(){
		$(".downloadButton").css("display", "");
	});
}
GenerateHeatmap.drawMap = function(event){
	var fileValue = event.currentTarget.value;
	if(fileValue == ""){
		return ;
	}
	GenerateHeatmap.fileName = fileValue;
	var data = [];
	data[data.length] = ["Country", fileValue];
	
	var workId = "rdf1s794i";
	
	$.each(LinkData.getSubjects( workId, fileValue), function(subjKey, subjValue) {
		var countryCode ="";
		var measured =0;
		
		var propAry = LinkData.getProperties(workId, fileValue);
		for(var i = 0 ; i < propAry.length ; i++){
			var propValue = propAry[i]
			if(propValue == "http://www.geonames.org/ontology#countryCode"){
				countryCode = LinkData.getObjects(workId, fileValue, subjValue, propValue)[0];
			}
			if(propValue == "http://linkdata.org/property/"+workId+"#value"){
				measured = LinkData.getObjects(workId, fileValue, subjValue, propValue)[0];
			}
		}
		data[data.length] = [countryCode, parseInt(measured, 10)];
//		$("#debug").append(countryCode + " <-> "+measured + "<br>");
	});
	drawMarkersMap(data);
}

function generatePng(){
		var svg = $("#paintedMap").children().children();
		canvg('canvas', svg.html(), { ignoreMouse: true, ignoreAnimation: true } );
		var c = document.getElementById('canvas');

var type = 'image/png'; 
		var data = c.toDataURL(type);

$('#png').attr('download', GenerateHeatmap.fileName + ".png");
      	$('#png').attr('href', data);
	}

*{
	background: #FFF;
}

#generate {
	font-size:16px;
	font-family:Arial;
	font-weight:normal;
	-moz-border-radius:8px;
	-webkit-border-radius:8px;
	border-radius:8px;
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	margin-top: 10px;
}

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	background:-webkit-gradient( linear, left top, left bottom, color-stop(5%, #dfdfdf), color-stop(100%, #ededed) );
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	filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#dfdfdf', endColorstr='#ededed');
	background-color:#dfdfdf;
}

#generate:active {
	position:relative;
	top:1px;
}

.downloadButton {
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	font-weight:normal;
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	padding:4px 20px;
	text-decoration:none;
	background:-webkit-gradient( linear, left top, left bottom, color-stop(5%, #89c403), color-stop(100%, #77a809) );
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	background-color:#89c403;
	color:#ffffff;
	display:inline-block;
	text-shadow:1px 1px 0px #528009;
 	-webkit-box-shadow:inset 1px 1px 0px 0px #a4e271;
 	-moz-box-shadow:inset 1px 1px 0px 0px #a4e271;
 	box-shadow:inset 1px 1px 0px 0px #a4e271;
	margin-top: 10px;
}

.downloadButton:hover {
	background:-webkit-gradient( linear, left top, left bottom, color-stop(5%, #77a809), color-stop(100%, #89c403) );
	background:-moz-linear-gradient( center top, #77a809 5%, #89c403 100% );
	background:-ms-linear-gradient( top, #77a809 5%, #89c403 100% );
	filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#77a809', endColorstr='#89c403');
	background-color:#77a809;
}

.downloadButton:active {
	position:relative;
	top:1px;
}

LinkData Work	Table Data
Production of crops top15 countries in 2010 Contributor:Sayoko Shimoyama Update:Sep 18, 2018 2639 Downloads, 4 Applications Top 15 countries of production of crops in 2010.	barley_top15_2010 corn_top15_2010 oats_top15_2010 peanut_2010 peanut_top15_2010 potato_top15_2010 rice_top15_2010 rye_top15_2010 soybean_top15_2010 sweet_potato_top15_2010 wheat_top15_2010