R help - Aug 2010 - How to Adaptively Set Up the Coordinate Range of Multiple Graphs in One Figure

Hi, R-Helpers,

I would like to ask about multiple graphs in one figure. I tried to execute
the following codes.

 xlim <- c(1,100)

ylim <- c(1,4)

plot(NA, xlim=xlim, ylim=ylim)

> x <- c(1:100)
for(j in seq(1,10,by=1)) {

     y <- j*x^2+log(j)

     lines(x, y)

}


In the above codes, I had to  arbitrarily set up the coordinate range of the
figure in advance before calculating the values y. (seexlim and ylim)
In results, the figure did not contain all data since most of data were
outside the predefined range.
I am wondering about how to control xlim and ylim adaptive to the real range
of data, in order to include all data in the figure.
Thank you for your great help and contribution.

Best Regards,
Stephen You


-----
--
Wonsang You
Special Lab Non-Invasive Brain Imaging
Leibniz Institute for Neurobiology
http://www.ifn-magdeburg.de
-- 
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Sent from the R help mailing list archive at Nabble.com.

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On Tue, Aug 31, 2010 at 03:26:12AM -0700, Wonsang You
wrote:
> In the above codes, I had to  arbitrarily set up the coordinate range of
the
> figure in advance before calculating the values y. (seexlim and ylim)
> In results, the figure did not contain all data since most of data were
> outside the predefined range.
> I am wondering about how to control xlim and ylim adaptive to the real
range
> of data, in order to include all data in the figure.
You do that by not specifying xlim and ylim - in that case R will
calculate them based on your data. Maybe I did not understand waht
exactly you want to get but if you explicitly set the limits that's
what R is going to use.

cu
	Philipp


-- 
Dr. Philipp Pagel
Lehrstuhl f?r Genomorientierte Bioinformatik
Technische Universit?t M?nchen
Wissenschaftszentrum Weihenstephan
Maximus-von-Imhof-Forum 3
85354 Freising, Germany
http://webclu.bio.wzw.tum.de/~pagel/

Hi,

It's easy with ggplot2,


library(ggplot2)

## create an empty plot
p <- ggplot(map=aes(x,y))

## create a dummy list of data.frames with different ranges
d <- replicate(4, data.frame(x=sample(1:10,1)+rnorm(10),
                             y=sample(1:10,1)+rnorm(10)),
               simplify=FALSE)

## add lines to the plot step by step
for(ii in seq_along(d))
  p <- p + geom_line(data = d[[ii]], color=ii)

HTH,

baptiste

On 31 August 2010 12:26, Wonsang You <you at ifn-magdeburg.de>
wrote:
>
> Hi, R-Helpers,
>
> I would like to ask about multiple graphs in one figure. I tried to execute
> the following codes.
>
> ?xlim <- c(1,100)
>
> ylim <- c(1,4)
>
> plot(NA, xlim=xlim, ylim=ylim)
>
>
>> x <- c(1:100)
>
> for(j in seq(1,10,by=1)) {
>
> ? ? y <- j*x^2+log(j)
>
> ? ? lines(x, y)
>
> }
>
>
> In the above codes, I had to ?arbitrarily set up the coordinate range of
the
> figure in advance before calculating the values y. (seexlim and ylim)
> In results, the figure did not contain all data since most of data were
> outside the predefined range.
> I am wondering about how to control xlim and ylim adaptive to the real
range
> of data, in order to include all data in the figure.
> Thank you for your great help and contribution.
>
> Best Regards,
> Stephen You
>
>
> -----
> --
> Wonsang You
> Special Lab Non-Invasive Brain Imaging
> Leibniz Institute for Neurobiology
> http://www.ifn-magdeburg.de
> --
> View this message in context:
http://r.789695.n4.nabble.com/How-to-Adaptively-Set-Up-the-Coordinate-Range-of-Multiple-Graphs-in-One-Figure-tp2401337p2401337.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ? ? ? ?[[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.
>


-- 
____________________

Dr. Baptiste Augui?

Departamento de Qu?mica F?sica,
Universidade de Vigo,
Campus Universitario, 36310, Vigo, Spain

tel: +34 9868 18617
http://webs.uvigo.es/coloides

On 08/31/2010 08:26 PM, Wonsang You wrote:
>
> Hi, R-Helpers,
>
> I would like to ask about multiple graphs in one figure. I tried to execute
> the following codes.
>
>   xlim<- c(1,100)
>
> ylim<- c(1,4)
>
> plot(NA, xlim=xlim, ylim=ylim)
>
>
>> x<- c(1:100)
>
> for(j in seq(1,10,by=1)) {
>
>       y<- j*x^2+log(j)
>
>       lines(x, y)
>
> }
>
>
> In the above codes, I had to  arbitrarily set up the coordinate range of
the
> figure in advance before calculating the values y. (seexlim and ylim)
> In results, the figure did not contain all data since most of data were
> outside the predefined range.
> I am wondering about how to control xlim and ylim adaptive to the real
range
> of data, in order to include all data in the figure.
Hi Stephen,
One easy way is:

xlim<-range(x)
ylim<-range(y)

Jim

The best approach is to calculate the limits before doing any plotting and set
them appropriately.  You could use your loop to compute y, but instead of
calling lines, store the values, then use a function like matplot (or ggplot2 or
lattice) to do the plotting.

If you really need to change the limits after the fact (again it is better the
other way), there is the zoomplot function in the TeachingDemos package, the 2nd
example on the help page does what you describe.

-- 
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 Wonsang You
> Sent: Tuesday, August 31, 2010 4:26 AM
> To: r-help at r-project.org
> Subject: [R] How to Adaptively Set Up the Coordinate Range of Multiple
> Graphs in One Figure
> 
> 
> Hi, R-Helpers,
> 
> I would like to ask about multiple graphs in one figure. I tried to
> execute
> the following codes.
> 
>  xlim <- c(1,100)
> 
> ylim <- c(1,4)
> 
> plot(NA, xlim=xlim, ylim=ylim)
> 
> 
> > x <- c(1:100)
> 
> for(j in seq(1,10,by=1)) {
> 
>      y <- j*x^2+log(j)
> 
>      lines(x, y)
> 
> }
> 
> 
> In the above codes, I had to  arbitrarily set up the coordinate range
> of the
> figure in advance before calculating the values y. (seexlim and ylim)
> In results, the figure did not contain all data since most of data were
> outside the predefined range.
> I am wondering about how to control xlim and ylim adaptive to the real
> range
> of data, in order to include all data in the figure.
> Thank you for your great help and contribution.
> 
> Best Regards,
> Stephen You
> 
> 
> -----
> --
> Wonsang You
> Special Lab Non-Invasive Brain Imaging
> Leibniz Institute for Neurobiology
> http://www.ifn-magdeburg.de
> --
> View this message in context: http://r.789695.n4.nabble.com/How-to-
> Adaptively-Set-Up-the-Coordinate-Range-of-Multiple-Graphs-in-One-
> Figure-tp2401337p2401337.html
> Sent from the R help mailing list archive at Nabble.com.
> 
> 	[[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.