no trendline option available

[MJA]

I have 3 sets of data for different conditions. When charted, 2 sets have the
option to "add trendline", but the third set (with more "ups and downs' in
the data) does not have the option available. There are no empty cells in the
source data nor are there multiple series on the chart. Any ideas why I don't
have the ability to add a trendline on this set of data. At first, I thought
it was perhaps because there isn't a high enough order in the polynomial fit,
but paring down the data so there is only one peak did not help (that is, add
trendline was still not an available action).

 

[Andy Pope]

Hi,

What type of chart do you have?
Are all 3 data sets in the same chart?

Cheers
Andy

 

[MJA]

It is a line chart.
The three data sets are in three separate charts.

 

[Andy Pope]

The 3rd one is not a 3d style chart is it?

 

[MJA]

no 3d. just a line with value markers at each data point.

 

[Andy Pope]

If you want to email example workbook I will have a look see.

Cheers
Andy

 

[Andy Pope]

Thanks for the example.
Whilst I have yet to discover what is different about that chart the fix
is simple.
Change the series to a column chart and then back to a line. You should
now be able to add trendline.

If I do discover the reason I will post it.

Cheers
Andy