[R] Odp: 2 plots with different scales in the same graphical window

[Petr PIKAL]

Hi

r-help-bounces at r-project.org napsal dne 09.12.2010 16:25:06:

> Dear useRs,
> I have two sets of data that I would like to plot in the same window, 
but their 
> ranges are really different, e.g.
> 
> a <- c(0.2, 0.5, 0.8, 0.3, 0.4, 0.5, 0.2, 0.2, 0.3)
> b <- c(100, 2000, 800, 200, 100, 50, 4, 2, 0)
> 
> If I do
> plot(a, ty='l'); points(b, ty='l')
> I won't be able to see sequence b.
> 
> However, if I do
> plot(b, ty='l'); points(a, ty='l')
> I won't be able to see the patterns in sequence a.
> 
> So is  there a way of plotting sequence a and b without applying log or 
> anything, but sequence a would be correspondent to the left y-axis and 
sequence 
> b correspondent to the right y-axis?

See twoord.plot from plotrix.

Or search archuves for a function plot.yy (I posted it few years ago).

Regards
Petr


> 
> Thanks in advance,
> Best,
> Rafael.
> 
> 
> 
>    [[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide 
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.