I guess that's my point - you are looking at the chart and deciding what is too much...for RS to be able to do this (and it probably can) you will need some kind of maths that you can tell the chart to use to decide if there is "too much" data as at the moment it is purely a subjective view
That is why I asked "what is too much data"
RS cannot know whether the graph is unredable or not so you need to consider what logic you would use to determine what too much data is...
Rgds, Geoff
We could learn a lot from crayons. Some are sharp, some are pretty and some are dull. Some have weird names and all are different colours but they all live in the same box.
Please read FAQ222-2244 before you ask a question