Hi Yeray,

Thanks a lot! - the TSubChartTool will do it.

Best Regards
Henrik Thørring

Hi Yeray, It looks pretty cool but I still struggle with some minor problems. I am not sure about the ChartTool1Resized and where I find it? Further, I do not find the Draw property you are using but only one with parameters (canvas, Rect)? Will Repaint do it? TSubChartTool looks cool as well, but i...

I need to show a selected part of a chart (overview) in another chart (detailed) of a big data set up to around 17 million data points. I would like to make something like Google does in the Google financial pages e.g. http://www.google.com/finance?&gl=us&hl=en&q=NASDAQ%3AAPWR&client=fss The chart-s...