[R] Axes Alignment Problem for Multiple Plots

[John Kane]

What is Coredata(Z0)?
It would be very useful. as the posting guidelines suggest to supply working code and sample data.


--- On Tue, 4/19/11, Barbaglia, Guido (ESA) <Guido.Barbaglia at fao.org> wrote:

> From: Barbaglia, Guido (ESA) <Guido.Barbaglia at fao.org>
> Subject: [R] Axes Alignment Problem for Multiple Plots
> To: "r-help at r-project.org" <r-help at r-project.org>
> Cc: "Stigler, Matthieu (EST)" <Matthieu.Stigler at fao.org>
> Received: Tuesday, April 19, 2011, 11:42 AM
> Dear all, 
> 
>    I'm trying to plot, in the same window,
> two different series, using barplot() for the first one and
> plot() for the second. What happens is that the second chart
> has a different axes origin, therefore the final plot is
> wrong. This piece of code shows the differences between the
> values of par()$usr:
> 
>    barplot(coredata(Z0), beside=TRUE,
> ylim=c(0,100)); 
>    par()$usr;
>    par(new=T); 
>    plot(coredata(Z0), ylim=c(0,100));
>    par()$usr;
> 
> I would like to know how it is possible to edit the values
> of par()$usr[3:4] of the second chart in order to be the
> same of the first one or, alternatively, how can I plot
> together bar and line series within the same reference
> system.
> 
> 
> Best Regards
> Guido Barbaglia
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