Dear Anonymous,
Please do read the help file:
https://ggplot2.tidyverse.org/reference/sec_axis.html If you read it
carefully you'll understand that is doesn't pick a time series.
Best regards,
ir. Thierry Onkelinx
Statisticus / Statistician
Vlaamse Overheid / Government of Flanders
INSTITUUT VOOR NATUUR- EN BOSONDERZOEK / RESEARCH INSTITUTE FOR NATURE
AND FOREST
Team Biometrie & Kwaliteitszorg / Team Biometrics & Quality Assurance
thierry.onkelinx at inbo.be
Havenlaan 88 bus 73, 1000 Brussel
www.inbo.be
///////////////////////////////////////////////////////////////////////////////////////////
To call in the statistician after the experiment is done may be no
more than asking him to perform a post-mortem examination: he may be
able to say what the experiment died of. ~ Sir Ronald Aylmer Fisher
The plural of anecdote is not data. ~ Roger Brinner
The combination of some data and an aching desire for an answer does
not ensure that a reasonable answer can be extracted from a given body
of data. ~ John Tukey
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2018-07-16 22:19 GMT+02:00 Stats Student <stats.student4647 at
gmail.com>:> Hi, I'm using scale_y_continuous with sec.axis and it's doing what
I need but I don't understand how it picks which of the two series becomes
the secondary.
>
> Does anyone have any insight into this?
>
> Thanks!
>
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> and provide commented, minimal, self-contained, reproducible code.