Question

I am trying to create Jqplot bar charts and facing difficulty in creating multidimensional array in like

   var plot2 = $.jqplot('chart2', [
    [[2,1], [4,2], [6,3], [3,4]], 
    [[5,1], [1,2], [3,3], [4,4]], 
    [[4,1], [7,2], [1,3], [2,4]]],

My data is in a HashMap inside hashMap it is like

 {software={low=1,high=5, medium=4}, harware={low=3,high=3},network{low=3,high=3,medium=8}}

How I can interpret my data in above multidimensional array.

I have written the following code to achieve this

 $(document).ready(function(){  
    <c:forEach var="data" varStatus="main" items="${data}">  

    var cdata = new Array();

    var twoDOuterArray = new Array(${data.size()});

    <c:forEach var="mapEntry" varStatus="status" items="${data['cData']}">
        twoDOuterArray[${status.index}] = new Array(3);
    </c:forEach>

    <c:forEach var="mapEntry" varStatus="status" items="${data['cData']}">
    <c:forEach var="dataValue" varStatus="status2" items="${mapEntry.value}">
        var valueArray = new Array();           
        alueArray.push(${dataValue.value});
        valueArray.push("${mapEntry.key}");
        twoDOuterArray[${status2.index}][${status.index}]=valueArray;
    </c:forEach>
    //alert(twoDOuterArray[${status.index}].length);
    </c:forEach>



    data.push(twoDOuterArray);

    alert(twoDOuterArray);

    plot2b = $.jqplot('chart2', data, {
        seriesDefaults: {
            renderer:$.jqplot.BarRenderer,
            pointLabels: { show: true, location: 'e', edgeTolerance: -15 },
            shadowAngle: 50,
            rendererOptions: {
                barDirection: 'horizontal'
            }
        },
        title:{
            text: "${title}",                    
            show: true,               
            textColor:"#fff",
        },
        axes: {
            yaxis: {
                renderer: $.jqplot.CategoryAxisRenderer
            }
        },
        legend: { show:true, location: 'e' }
    });


    );

</c:forEach>
});

It seems that format is correct but I don’t understand where I am wrong or is this the correct way to create data. if anyone could help me to solve this that would be great.

edit:
how I can check that my array is created in the above required format?

Answer 1

To see what your data looks like, I’d use Firebug (or your favorite browser’s equivalent) to set a breakpoint on the call to jqplot. Then inspect the variable you want to check.

Also it seems jqplot should be using twoDOuterArray but you are passing it data which might be a problem.

One more thing: if you original data object contains more than one element, the outer <c:forEach> you have will result in jqplot overlaying new plots on the previously generated ones.

Instead of mixing the JSTL with the Javascript I would also suggest building your 2d array from wherever your other variables are set (for example: a controller). Then convert the object to JSON with a library like Gson and pass that to jqplot directly.