A basic Bar chart using CSV data (with column based data)

This basic example uses AJAX to request a CSV file as with basic-csv.html but unlike that example this CSV file holds each data-set as columns instead of rows. You can see the CSV file here.

Note: In October 2013 a new CSV reader was added to RGraph. It makes reading CSV files much easier. You can read about the new CSV reader here.

This goes in the documents header:

<script src="RGraph.common.core.js"></script>
<script src="RGraph.common.key.js"></script>
<script src="RGraph.line.js"></script>

Put this where you want the chart to show up:

<canvas id="cvs" width="600" height="250">
    [No canvas support]
</canvas>

This is the code that generates the chart:

<script>
    window.onload = function ()
    {
        /**
        * This is the callback for the AJAX request
        */
        var callback = function ()
        {
            // Parse the AJAX result text
            var text   = this.responseText.split(/\r?\n/);
            var labels = ['Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sunday'];
            var data   = [];
            var key    = text[0].split(/,/);
            
            for (var row=1; row<text.length; ++row) {

                var cells = text[row].split(/,/);

                for (var i=0; i<cells.length; ++i) {
                    
                    if (!data[i]) data[i] = [];
                    
                    // Add the value that hs been retrieved from the CSV file. Remember that because the CSV file is a
                    // text file - it needs to be converted to a number first
                    data[i].push(Number(cells[i]));
                }
            }


            var line = new RGraph.Line({
                id: 'cvs',
                data: data,
                options: {
                    textAccessible: true,
                    linewidth: 2,
                    shadowColor: '#ccc',
                    labels: labels,
                    hmargin: 5,
                    scaleDecimals: 2,
                    unitsPre: 'Ł',
                    gutterLeft: 45,
                    key: key,
                    keyPosition: 'gutter',
                    keyPositionGutter: {
                    keyPositionGutterBoxed: false
                }
            }).draw();
        }


        /**
        * Make the AJAX call that fetches the CSV data. You could just as easily
        * use the jQuery AJAX functionality if you prefer
        */
        RGraph.AJAX('/sample2.csv', callback);
    };
</script>