What type of chart? Explain what steps you are taking. Is the x-axis set to
constant min/max or to automatic?
From Help (specifications)
Feature Maximum limit
Charts linked to a worksheet Limited by available memory
Worksheets referred to by a chart 255
Data series in one chart 255
Data points in a data series for 2-D charts 32,000
Data points in a data series for 3-D charts 4,000
Data points for all data series in one chart 256,000
Line styles 8
Line weights 4
Area patterns (screen display) 18
Total area pattern and color combinations (color display) 56,448

best wishes
--
Bernard V Liengme
Microsoft Excel MVP
www.stfx.ca/people/bliengme
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wrote in message
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Does anyone know if there is a limit to the number of items you can
have on the x-axis of a chart in MS excel? Right now I am being
limited to 7 (e.g. when I try to add more than 7 values to my data
series, I am unable to so). Thanks!