Stacked Chart not working with Category Axis

Stacked charts seem to work fine until used with a category axis. When using a category axis, they are simply overlayed on top of each other.

This can easily be demonstrated using the Stacked Chart Example (http://www.flotcharts.org/flot/examples/stacking/index.html) and making some minor modifications:

1. Include the jquery.flot.categories.js script.
2. Set the X axis to be a category axis:

                xaxis: {
                    mode: 'categories'
                },

1. Change the data point generation code to generate categories for the x axis instead of numbers:

        var alph = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j'];

        var d1 = [];
        for (var i = 0; i <= 10; i += 1) {
            d1.push([alph[i], 1]);
        }

        var d2 = [];
        for (var i = 0; i <= 10; i += 1) {
            d2.push([alph[i], 2]);
        }

        var d3 = [];
        for (var i = 0; i <= 10; i += 1) {
            d3.push([alph[i], 3]);
        }

That’s it!

FYI, I was able to work around this by adding the denoted lines to jquery.flot.stack.js. I know that this is not the best solution, but at least it might help illustrate the issue:

                    // cases where we actually got two points
                    px = points[i + keyOffset];
                    py = points[i + accumulateOffset];
                    qx = otherpoints[j + keyOffset];
                    qy = otherpoints[j + accumulateOffset];
                    bottom = 0;

                    // ADDED START
                    if (s.xaxis.categories) {
                        px = s.xaxis.categories[px];
                    }
                    // ADDED END

                    if (px == qx) {
                        ...

[brianpeiris]

Make sure you load the stack plugin after you load the categories plugin. http://jsfiddle.net/brianpeiris/uQjYe/

[shumailabatool]

Make sure you load the stack plugin after you load the categories plugin. http://jsfiddle.net/brianpeiris/uQjYe/

Thanks a lot,resolved my issue