score:11

Accepted answer

Note that there seems to be some changes going on. The actual configuration would depend on which v2.0 you are using.

For Version 2.0.0-alpha

Set categorySpacing for the xAxes. You can do this globally

Chart.defaults.bar.scales.xAxes[0].categorySpacing = 0

or you can do it by chart

...
scales: {
    xAxes: [{
        categorySpacing: 0
    }],
...

Fiddle - http://jsfiddle.net/beehe4eg/


For Version 1.0.2

Adjust the options barValueSpacing and barDatasetSpacing to make the bars closer. This will automatically increase their width.

score:17

For me, trying 2.0 beta, what worked was to set the barPercentage on the xAxes scale option.

This is what I used:

var options = {
    data: chartData,
    type: "bar",
    options: {
        scales: {
            xAxes: [{ barPercentage: 0.5 }]
        }
    }
};
var chart = new Chart(chartCtx, options);

score:40

For version 2.4.0 barThickness - Manually set width of each bar in pixels. If not set, the bars are sized automatically.

options = {
    scales: {
        xAxes: [{
            barThickness : 73
        }]
    }
}

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