There are two types of category axis: Category and Time-Scale. If
Automatic (the default case) is selected, Excel guesses which to use
based on the data. In your case, Excel guessed Category for Automatic.
If your X values were dates, Excel would have guessed Time-Scale, but it
would still say Automatic until you changed it.

- Jon
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Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
_______


stevel wrote:

Under Primary Axis - What is the difference between Category and Automatic?
Category (X) axis
-Automatic
-Category