Draw bar line even though the value is zero

[marbetschar]

I got a grouped bar chart and this works like a charm. However, to indicate there is data - even though the value of the data is zero - I'd like to have a bar drawn on every occasion.

Right now, the charting library draws the following:

But it should behave like follows - how can I achieve this? Unfortunately I've not found anything pointing me into the right direction :(

[marbetschar]

Doh! Got the solution: I just check the yValue during BarChartDataEntry creation and set it to a value slightly above zero.

BarChartDataEntry(x: xValue, y: yValue == 0.0 ? 0.01 : yValue)

Are there any downsides to this approach? Maybe this does not work, if the range of yValues is too large?

[liuxuan30]

I just want to say use 0.01 or 0.1 instead of 0. Something may happen is that, when your yMax is very large, e.g. 1 million, 0.01 can be ignored as well, so maybe use percentage like (yMax - yMin) * 0.01

[marbetschar]

@liuxuan30 that's an awesome idea!! Thank you!