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candlestick chart : strange display
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d_vineet
#1 Posted : Tuesday, July 17, 2012 9:06:48 AM(UTC)
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With the following code, candlestick chart is rendered correctly.

Code:

<script lang="javascript" type="text/javascript">
        $(document).ready(function () {
            $('#jqChart').jqChart({
                title: { text: 'CNDL CHRT' },
                series: [
                            {
                                type: 'candlestick',
                                data : [ ['Mon', 5375, 5325, 5340, 5330], ['Tue', 5322, 5250, 5290, 5270], ['Wed', 5375, 5325, 5340, 5330], ['Fri', 5322, 5250, 5290, 5270]]
                                                            }
                        ]
            });
        });
    </script>


All other things unchaged except for the JSON data as under, the chart is not rendered correctly.
Tooltips are displayed for only some of the bars.
All bars are without fill-color.

Code:

data : [["2012/07/02:0920", 5308.2, 5308.2, 5288.0, 5292.4], ["2012/07/02:0930", 5292.0, 5296.7, 5283.35, 5295.05], ["2012/07/02:0940", 5295.95, 5297.3, 5286.6, 5288.55], ["2012/07/02:0950", 5289.4, 5292.0, 5284.0, 5285.0]]


What may be wrong in the second "data" json object?

Thanks,

Vineet
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Dragan
#2 Posted : Tuesday, July 17, 2012 9:56:42 AM(UTC)
Rank: Advanced Member

Groups: Administrators, DataVizJavaScript, jQueryChart, jQueryDV, MvcChart, Registered
Joined: 1/3/2011(UTC)
Posts: 483

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Hi Vineet,

The jqChart candlestick chart accepts data is in format HLOC. I believe you second data is in format OHLC.

You can convert it with something like:
Code:
var data = [["2012/07/02:0920", 5308.2, 5308.2, 5288.0, 5292.4], ["2012/07/02:0930", 5292.0, 5296.7, 5283.35, 5295.05], ["2012/07/02:0940", 5295.95, 5297.3, 5286.6, 5288.55], ["2012/07/02:0950", 5289.4, 5292.0, 5284.0, 5285.0]];

        for (var i = 0; i < data.length; i++) {

            var item = data[i];

            data[i] = [item[0], item[2], item[3], item[1], item[4]];
        }

        $('#jqChart').jqChart({
            title: { text: 'CNDL CHRT' },
            series: [
                        {
                            type: 'candlestick',
                            data: data
                        }
                    ]
        });
Best Regards,
Dragan Matek
jqChart Inc.
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d_vineet
#3 Posted : Tuesday, July 17, 2012 10:27:27 PM(UTC)
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Hi dragan !
I really appreciate your quick support.
I had overlooked the HLOC format.
Now the chart is rendered correctly.

Thank you very much.

-- Vineet
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