Bubble chart wrong X axis maximum calculated when min is set

[ivanmjartan]

Hi there we have problem in our Bubble chart.

We have several series in bubble chart.

3 of them have X value [40542, 40907,41270] (3 bubbles) others are empty.

When we set min value of x axis to 40805 result graph is empty

Expected behaviour

there will be one bubble with value 41270

Actual behaviour

Graph is empty

Live demo with steps to reproduce

https://jsfiddle.net/9j07b3ym/

Try to remove "min": 40805 in x axis definition

Product version

We are using 4.2.5

Test repro version current

Affected browser(s)

[pawelfus]

Hi @ivanmjartan

Thank you for reporting this bug. It looks like setting max resolves the issue too: https://jsfiddle.net/BlackLabel/9n0sjrae/

Simplified demo: https://jsfiddle.net/BlackLabel/9n0sjrae/4/

Internal note:
For some reason, xAxis.max is miscalculated:

< Highcharts.charts[0].xAxis[0].getExtremes();
> {
>   dataMax: 41013,
>   dataMin: 40542,
>   max: 40975.42787658802,
>   min: 40805,
>  userMax: undefined,
>   userMin: undefined
> }

Simple modification here:

highcharts/js/parts-more/BubbleSeries.js

Line 553 in c6850f1

transA *= (axisLength + pxMin - pxMax) / axisLength;

From pxMin - pxMax to Math.abs(pxMin - pxMax) looks better, but bubble is still cut off.