In a 2D chart, you can have up to 255 series, a series can have a maximum of
32000 points, and the whole chart can have a maximum of 255000 points. You
have a ways to go.

Of course, depending on your version of Excel, performance may suffer before
you get close to these limits.

- Jon
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Jon Peltier, Microsoft Excel MVP
Peltier Technical Services, Inc.
http://PeltierTech.com/WordPress/
_______


"Dave" wrote in message
...
I keep medical data on rather complicated Excel line graph. I currently
have 40 items either plotted (curves) or noted as just data points. X axis
is dates (about 4 years). Although I have never had any trouble adding
info, other than it is getting a bit crowded, is there a limit to how may
items Excel can chart?
Thx
Dave
WIndXP SP2 Office(Excel)2003