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import csv into canvasJS

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  • #19391

    trying to get a canvas graph using csv file.
    The name of the csv is “Data.csv”
    The contents of the csv file:
    11/06/2014,5992
    12/06/2014,6341
    13/06/2014,6653

    When I run it I get a blank screen.
    Am I missing something.

    <!DOCTYPE html>
    <html>
    <head>
    <title>Chart using XML Data</title>
    <script type="text/javascript" src="https://canvasjs.com/assets/script/jquery-1.11.1.min.js"></script>
    <script type="text/javascript" src="https://canvasjs.com/assets/script/canvasjs.min.js"></script>
    <script type="text/javascript">
        window.onload = function() {
            var dataPoints = [];
    	 
            function getDataPointsFromCSV(Data.csv) {
                var dataPoints = csvLines = points = [];
                csvLines = csv.split(/[\r?\n|\r|\n]+/);         
    		        
                for (var i = 0; i < csvLines.length; i++)
                    if (csvLines[i].length > 0) {
                        points = csvLines[i].split(",");
                        dataPoints.push({ 
                            x: parseFloat(points[0]), 
                            y: parseFloat(points[1]) 		
                        });
                    }
                return dataPoints;
            }
    	
    	$.get("https://canvasjs.com/services/data/datapoints.php?xstart=5&ystart=10&length=10&type=csv", function(data) {
    	    var chart = new CanvasJS.Chart("chartContainer", {
    		    title: {
    		         text: "Chart from CSV",
    		    },
    		    data: [{
    		         type: "line",
    		         dataPoints: getDataPointsFromCSV(data)
    		      }]
    	     });
    		
    	      chart.render();
    
    	});
      }
    </script>
    </head>
    <body>
    	<div id="chartContainer" style="width:100%; height:300px;"></div>
    </body>
    </html>
    #19401

    @rick2,

    As x-value stored in CSV is data-time, it should be parsed to date object than to float x: parseFloat(points[0]),. Changing it to x: new Date(points[0]), should work fine in your case. Please take a look at this documentation page for step-to-step tutorial on rendering chart with data from CSV.
    Chart using data from CSV


    Vishwas R
    Team CanvasJS

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