working with large data sets

MegaSoftware · Post by **MegaSoftware** » Mon Dec 08, 2003 10:12 pm

We're working with very large data sets (O(6)-O(8)) and we need the ability to display data in scrollable chunks. For example, we need to render 10^6 data points into, say, 10^5 pixels. However, we want the user to be able to scroll across the display window width, eg., 500 or 1000 pixels, without having to recompute and redisplay the graph window. We're mainly interested in line charts for this.

What approach is recommended to accomplish this?

One idea we had is to have a horizontal spinner that shows target data values (along the X-axis) and allows increments in 1/2 the visible scrolling window. Clicking the left and right scroll buttons would scroll the data in the window as expected to the left or right.

Thanks
-David Schwartz

tom · Post by **tom** » Tue Dec 09, 2003 6:58 pm

hi,

I think you posted your question to the wrong forum. This is the TeeTree VCL forum, while your question looks as a TeeChart question.

tom.

MegaSoftware · Post by **MegaSoftware** » Tue Dec 09, 2003 7:27 pm

oops... I didn't notice this. Thanks for pointing it out!