I expected you were using a scatter plot. For regular Line and Column
charts, the X (usually referred to as "category") axis represents
categories and not numeric values. Because the category axis contains
"categories" rather than numeric values, it can't be converted to a
logarithmic scale.

The series that needs to be on a logarithmic X scale will need to be in
a scatter plot. Beyond that, I'm a little uncertain of exactly what you
want.


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MrShorty
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