Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111
> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Rodrigo Aluizio
> Sent: Thursday, December 09, 2010 9:44 AM
> To: R Help
> Subject: [R] Barplot with "Independent" Lines Y axis
>
> Hi list. I'm plotting pluviometric (Rain) data as a barplot, and then
> adding
> the salinity variable to this plot as lines. Obviously as these Y
> scales are
> completely different the salinity appears at the lower part of the
> graph
> extremely compacted. I need to plot the line at the exactly same area
> of the
> barplot but with its own Y axis (at the right), so the salinity can use
> the
> plot area freely. I tried the par(new=T), but it only works for high
> level
> plot functions (not for lines or points).
>
> Below are some example data and the code I'm using:
>
> Month Rain Salt
> Fev 365.6 13
> Mar 235 18
> Abr 115.1 18
> Mai 47.4 18.75
> Jun 112 15
> Jul 156.8 17
> Ago 66.1 15
> Set 149.8 14
> Out 167.1 11.5
> Nov 269.3 17.5
>
> mp<-barplot(Dados$Rain,names.arg=rownames(Dados),ylab='Pluviosidade
> (mm)',width=0.5,ylim=c(0,370),yaxp=c(0,370,10))
> lines(mp,Dados$Salt,type='b',pch=19,lty='dotted')
>
> Any ideas?
>
> Thank you for the attention.
>
> Regards
>
> -------------------------------------------------------------------
> MSc. Rodrigo Aluizio
> Centro de Estudos do Mar/UFPR
>
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