Gantt doesn't work while using array of arrays as a data

[kamil-musialowski]

Actual behaviour

While using an array of arrays (instead of an array of objects), the Gantt allows only one point. If we try to add more, the chart doesn't load up and it throws indexOf is not a function error.

Live demo with steps to reproduce

https://jsfiddle.net/BlackLabel/5t97fr0c/

Uncomment the 6th line to see the error.

Product version

Highcharts Gantt v10.2.1 (latest)

[karolkolodziej]

Internal note:
See the PR that added keys support for Gantt: #14026

[ajaykumar300796]

fix for #14026 is working only for single array and the problem/error is with when using multiple arrays.

[bhandurejitu]

any update on this?

[karolkolodziej]

Yes, the PR that is linked only works for a single array. What I meant is that the fix should be concentrated on changing that.

Besides that, there has been no change.

[bhandurejitu]

@karolkolodziej
which one series of data work fast for any chart the array of objects or unstructured data?

[bhandurejitu]

if I pass unstructured data then it will take time to process or it will work normally like the array of object data?

[karolkolodziej]

@bhandurejitu If you declare data as an array of arrays it is going to be faster than objects but still with reasonable amount of data (~5k points) the difference should not be that noticible.

[bhandurejitu]

@bhandurejitu If you declare data as an array of arrays it is going to be faster than objects but still with reasonable amount of data (~5k points) the difference should not be that noticible.

@karolkolodziej for large series data(any chart) which one is best among the array of objects or unstructured data

[millieqiu]

Hi, I still face the same problem on version Highcharts 11.4.6

Is there any update on this or have any alternative method? (to load over 1K data in Highcharts Gantt)

Thanks!

[hubertkozik]

Hi @millieqiu! Thank you for pointing out this issue. I've added it to our backlog, you will get notifications here when the work will start.