How to Zoom and Pan to thow last 20 candles

[qq]

I have a chart with 300 holc data. So I got 300 candles.

But I want show tha last 20 candles to the user when the view is created. And then user can zoom and pan to see more data by finger.

 

We have implement this feature with android version.

How can I do that with ios version?

Thank you very much.

[Miroslava]

Hello,

Thank you for contacting us.

TKChartAxis allows panning to a specific data point by calling panToDataPoint: method. In your you should pass the last data point. Please consider the code snippet below. 

TKChartScatterSeries *series = [[TKChartScatterSeries alloc] initWithItems:items];
[_chart addSeries:series];

_chart.xAxis.allowZoom = YES;
_chart.xAxis.zoom = 10;
[_chart.xAxis panToDataPoint:[series.items lastObject]];

I hope this helps. If you need further assistance, do not hesitate to contact us.

Regards,
Miroslava
Telerik by Progress

[qq]

It works.

Thank you very much. It annoyed us many days.

I can focus on other functions now.