javascript - Highcharts columns have no width (seemingly arbitrarily) -

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i'm working column chart using highcharts. chart needs handle arbitrary number of columns.

here's example of 1 such chart need handle:

$('#timeschart2').highcharts({         chart: {             type: 'column'         },         title: {             text: 'response times'         },         xaxis: {             type: 'datetime',             datetimelabelformats: { // don't display dummy year                 month: '%e. %b',                 year: '%b'             }         },         yaxis: {             title: {                 text: 'minutes'             }         },         series: [{             name: 'average response time',             data: [[date.utc(2013, 6, 30), 878.42], [date.utc(2013, 6, 31), 579.68], [date.utc(2013, 7, 1), 400.42], [date.utc(2013, 7, 2), 622.95], [date.utc(2013, 7, 5), 1260.97], [date.utc(2013, 7, 3), 0], [date.utc(2013, 7, 4), 0], [date.utc(2013, 7, 6), 517.945] ],             datagrouping: {                 enabled: false             },             pointpadding: .05          }],     });

the problem columns have extremely small width on set of data. in datasets (see first graph in jsfiddle link), columns have normal width , fine.

one possible workaround set pointwidth fixed value, on large graphs columns overlap. i've tried experimenting pointpadding , grouping well, no avail.

http://jsfiddle.net/3nzzw/

anyone know what's happening here?

that's odd. but, you're first data series in reverse date order. if fix that, chart right.

http://jsfiddle.net/putqd/

        series: [{             name: 'average response time',             data: [[date.utc(2013, 7, 2), 354.5], [date.utc(2013, 7, 3), 1981.875], [date.utc(2013, 7, 4), 434.5], [date.utc(2013, 7, 5), 678.1], [date.utc(2013, 7, 6), 87.465] ],             datagrouping: {                 enabled: false             },             pointpadding: .05          }],

(note changed dates, didn't change data)


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