Charts: Add moveViewToEnd()

[NicolasLourenco]

Hello,
I am now faced with a problem. No method, except moveViewTo, allows to move on the X axis to go to the last element not centered on the view.

I want to show the last element like this:

|. ------------- . . o|
Where o is the last element.

How I can do this?
Thanks.

[liuxuan30]

seems duplicated to more generic feature moveViewToX, take a look at #450 and #468, and perhaps you can use ChartTransformer, discussed in #226, though it discusses zoom and scale, but there is some useful APIs to manipulate the matrix so you can display I think.

[NicolasLourenco]

So, For the next people with this problem, you can resolve this issue like this:

    NSInteger count = [self.lineChartView.data.dataSets[0].yVals count];
    ChartDataEntry *entry = self.lineChartView.data.dataSets[0].yVals[count-1];

    [self.lineChartView centerViewToXIndex:count-1 yValue:entry.value axis:AxisDependencyLeft];

This worked for me.
I think it should be a feature...

[liuxuan30]

Did you write centerViewToXIndex? I don't see it right now. It will be great if you could create a PR for this if you think it's helpful to others.

[NicolasLourenco]

No, centerViewToXIndex is an instance method of BarLineChartViewBase
I'll will se for the PR.

[liuxuan30]

It does not exists, so you actually write it. You could file a PR if you like to!