R help - Dec 2013 - ggplot question: how to have two y-axis guide on one plot?

I have a plot I'd like to do wherein I plot to different y data sets and
want to have two different y axis's appear (perhaps one on right side and
one on left).   I searched R help with all the key phrases I could think of and
I have three books covering ggplot but I can't find an example of doing
this.   It seems a natural thing to do with ggplot.

Anyone out there have a small example of doing this sort of thing?

Thanks.

colleen

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On Dec 13, 2013, at 3:01 PM, Roe, Colleen wrote:
> I have a plot I'd like to do wherein I plot to different y data sets
and want to have two different y axis's appear (perhaps one on right side
and one on left).   I searched R help with all the key phrases I could think of
and I have three books covering ggplot but I can't find an example of doing
this.   It seems a natural thing to do with ggplot.
> 
> Anyone out there have a small example of doing this sort of thing?
Here is why Hadley says it's not a feature:

http://stackoverflow.com/questions/3099219/how-to-use-ggplot2-make-plot-with-2-y-axes-one-y-axis-on-the-left-and-another

-- 

David Winsemius
Alameda, CA, USA