1000 points in 500 pixels?
The question of plotting a line graph with thousands of data points came up again today. This always puzzled me; if your chart is only 500 pixels wide, why would you try to draw a chart with 1000 points? It would leave only half a pixel for each point. Flash is kewl but it won't render half pixels and even if it did, rendering 1000 lines in Flash is a little slow.
The quick option we discovered was to skip data points. For most data you can skip anywhere from 2 to 10 points and the chart won't change. Skipping points not only speeds up rendering but it can also result in a cleaner chart.
Written by "Sam".Read the full article