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Axes Alignment Problem for Multiple Plots

Matthieu Stigler

Wed, Apr 20, 2011 12:30 AM

Guido

You missed William's e-mails, which solved the problem:
use

  yaxs="i"


in second call. Also, William made the good point that you can rather 
just use lines() in second call.

Good William!

Mat



Le 20/04/2011 08:00, Barbaglia, Guido (ESA) a ?crit :

________________________________________
From: mat [matthieu.stigler at gmail.com]
Sent: 19 April 2011 22:58
To: John Kane
Cc: r-help at r-project.org; Barbaglia, Guido (ESA)
Subject: Re: [R] Axes Alignment Problem for Multiple Plots

Ok, I can replicate your problem, with following code:

dat<- 1:10
     barplot(dat, beside=TRUE,ylim=c(0,100));
     par()$usr;
     par(new=T);
     plot(dat, ylim=c(0,100), type="l");
     par()$usr;

So it looks like even if you specify yourself ylim, the resulting
effective ylim (usr[3:4] ) will be different! More surprinsingly,
setting the usr parameter before is not effective:
     par(new=T, usr=c(0,11,0,100));

this will not prevent    par()$usr; to be different than fixed :-(

No idea, but hopefully someone else on the list will be able to provide
advice!

Matthieu

Le 19. 04. 11 20:47, John Kane a ?crit :
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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Thread (7 messages)

Barbaglia, Guido (ESA) Axes Alignment Problem for Multiple Plots Apr 19 John Kane Axes Alignment Problem for Multiple Plots Apr 19 Matthieu Stigler Axes Alignment Problem for Multiple Plots Apr 19 William Dunlap Axes Alignment Problem for Multiple Plots Apr 19 Barbaglia, Guido (ESA) Axes Alignment Problem for Multiple Plots Apr 19 Matthieu Stigler Axes Alignment Problem for Multiple Plots Apr 20 Barbaglia, Guido (ESA) Axes Alignment Problem for Multiple Plots Apr 20