score:1

It is not really clear what you meant by "they only supported a single column on y axis" but, yes, you can have multiple points per category. I am using columnrange series. Take a look at the data format you need. You need to explicitly state what category index the data points are for:

series: [{
    name: 'Temperatures',
    data: [
        {x: 0, low: -9.7, high: 9.4},
        {x: 0, low: 20.7, high: 30.4},

        {x: 1, low: -9.7, high: -5.5},

        {x: 2, low: 1, high: 20},
        {x: 2, low: 50, high: 55},
    ]
}]

Minimal working example.


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