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Editorial Team
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Asked: 2026-06-08T19:30:36+00:00

I have a question regarding Highstock. I am having a data recording Engine Load

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I have a question regarding Highstock. I am having a data recording Engine Load which has spikes in the dataset. I am trying to chart this dataset in Highstock, but when the input data range is large (to a certain point) then the spikes won’t be showing correctly in the chart. Attached are the images for better explanation.

Showing correctly when the date range is not large:
enter image description here
NOT showing correctly when the data range is large:
enter image description here

The two images are charting from the same dataset just with different range of time.
Why this would happen in Highstock and how to get it fixed?

Thank you in advance.

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1 Answer

  1. Editorial Team

    I believe this has to do with HighStock doing some sort of aggregation when zoom in out/in past a certain threshold. This can be turned off by setting something like this:

    plotOptions: {
    series: {
        dataGrouping: {
            enabled: false
        }
    }
}

    This tells HighStock to stop grouping x-Axis points together to get aggregates.
    Check here for more info in dataGrouping.

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