Hi Stephan,
I have to agree with your example.
Another case in when X-categories are date instead of text.
Then I would propose to add a warning message about the limit of usability
of such equation.
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Stefan Weigel wrote
> 1. Enter Data A1=11, A2=13, A3=12, A4=14, A5=16, A6=15
> 2. Select A1:A6
> 3. 4. Create a Line chart
> 4. Insert linear trendline and show equation
>
> --> Equation does make sense.
If you do not specify X-values/categories, what sense can you give in the
equation for 'x'?
>
Hi,
In chart, you may add a trendline to almost all type of chart. However, the
equation is significant only for XY scatter diagrams. I proposed to remove
the equation (not the trendline, only the equation) of all type of chart,
except for XY chart.
https://bugs.freedesktop.org/show_bug.cgi?id=741
