Utilize Highcharts to showcase time-related data in tooltips

I have a chart that displays time data on both the X and Y axes. While I am able to convert my millisecond data into HH:MM:SS for the X axis, I'm struggling to get the Y axis tooltip to also show in this format. The API suggests it's achievable, but I haven't been successful in replicating it.

tooltipValueFormat: String

Specifically for parallel coordinates. This format will be used for point.y and will appear in tooltip.pointFormat as point.formattedValue. If not specified, other options will be applied in the following order:

  1. The format set in yAxis.labels will be used if available
  2. If the yAxis is a category, the category name will be displayed
  3. If the yAxis is a datetime type, the value will use the same format as the yAxis labels

https://api.highcharts.com/highstock/yAxis.tooltipValueFormat

Take a look at my example in this fiddle: https://jsfiddle.net/gramlich/jpnsujo8/1/

To add more complexity, I am implementing this within a Django View and passing the chart options via JSON to limit the need for JavaScript. If possible, I prefer a solution using only objects from the Highcharts API without having to create my own Formatter function in JS.

Thank you for any assistance!

javascriptdjangohighcharts

Answer №1

To format data points, you can utilize the pointFormat feature by providing a formatting string like this:

tooltip: {
    pointFormat: '{point.y:%M:%S}'
}

For a demonstration, check out this live example: https://jsfiddle.net/w4f9suzb/

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