Charts 3.0.1: rendering artifact on iPhone 4s & iOS 8.1

[clear-m]

Hi!
I am faced some strange chart rendering artifact on small screen of iPhone 4S with iOS 8.1 and Charts 3.0.1.
The issue reproduced with charts demo project in case of huge x values in ChartDataEntry.
Please, have a look at diff_patch.txt
Thanks!

[liuxuan30]

Gees, I applied that patch and I found 4S is removed from the simulator.. Can you post a screenshot to show what's the artifact?

[clear-m]

Ok - no problem - here is the screen of LineChart demo with patch applied:

and with other presets:

[liuxuan30]

oh no.. I don't see what's wrong with the first image, but the second one is a mass.. Would you be able to debug and fix? I don't have a 4S env to test..

[cartmanguo]

I think this is the the same issue in #1679 ,try to use a small number for x value.
If you want to use unix timestamp,you can use the current timestamp minus the timestamp of the beginning time of a day.
example:
2016/12/15 13:51:3(1481781063) - 2016/12/15 0:0:0(1481731200) = 49863,so use 49863 as the x value of an entry.And add the timestamp(1481731200) in stringForValue method in your AxisValueFormatter Class

[clear-m]

Thanks you guys for an answers!
I already did such x truncations but only as a workaround.
Yes, I think that the issues are mots likely related

[clear-m]

I am also thinking that this issue is relative with #1851 too

[liuxuan30]

hmm.. Guess we need @danielgindi to review this