Chart.js xAxis linear scale : strange behavior

Question

I'm trying to use linear scale on x-axis in my chart.js chart. I add some code beause stackoverflow makes it obligatory when adding a jsfiddle url, but I don't see the point :

var options={
    scales:{
    xAxes:[{ type: "linear"}]
  }
};

I'm getting a very strange chart (2nd one) : http://jsfiddle.net/t0krmau8/

In the first chart, I'd like to get more space between 2 and 4 (2 times more space than between 1 and 2), that's why I'm using a linear scale.

Am I using the linear scale wrong? Or should I use something else?

Thanks

Answer 1

You're not providing the data in correct format for the scatter line plot.

The correct format to provide the data is described by the following example from Chart.js Docs.

var scatterChart = new Chart(ctx/* your canvas context*/, {
 type: 'line',
    data: {
        datasets: [{
            label: 'Scatter Dataset',
            data: [{
                x: -10,
                y: 0
            }, {
                x: 0,
                y: 10
            }, {
                x: 10,
                y: 5
            }]
        }]
    },
    options: {
        scales: {
            xAxes: [{
                type: 'linear',
                position: 'bottom'
            }]
        }
    }
});

source

I think the x and y should be separable into different arrays, but you can always do a combination step and combine them into objects.