R help - May 2010 - adding year information to a scatter plot

Hi R users,

I would like to add year information to each point in a scatter plot. The
following
example shows what i mean:

df=data.frame(year=c(2001,2002,2003),a=c(8,9,7),b=c(100,90,95))
df
plot(b~a,data=df)

Now, I would like to see which point belongs to 2001, 2002 and 2003 in the
above
graphic.

Thank you very much,
ozan

	[[alternative HTML version deleted]]

I think that one of the packages, perhaps Hmisc or plotrix does this but you can
also do it just using text()

Example

plot(b~a,data=df, xlim=c(min(df$a)-5,max(df$a)+5), ylim=
c(min(df$b)-5,max(df$b)+5))
text( df$a+1,df$b, labels=df$year)

Alternatively you can do this in ggplot

library(ggplot)
p <- ggplot(df, aes(x=a, y=b, label=year)) 
 p + geom_text() 


--- On Sun, 5/2/10, Ozan Bakis <obakis at gsu-giam.net> wrote:
> From: Ozan Bakis <obakis at gsu-giam.net>
> Subject: [R] adding year information to a scatter plot
> To: r-help at r-project.org
> Received: Sunday, May 2, 2010, 3:25 PM
> Hi R users,
> 
> I would like to add year information to each point in a
> scatter plot. The
> following
> example shows what i mean:
> 
> df=data.frame(year=c(2001,2002,2003),a=c(8,9,7),b=c(100,90,95))
> df
> plot(b~a,data=df)
> 
> Now, I would like to see which point belongs to 2001, 2002
> and 2003 in the
> above
> graphic.
> 
> Thank you very much,
> ozan
> 
> ??? [[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.
>

Hi Ozan,

The {calibrate} package allows you to do that.

install.packages("calibrate")
library(calibrate)
df=data.frame(year=c(2001,2002,2003),a=c(8,9,7),b=c(100,90,95))
df
plot(b~a,data=df)
textxy(df$a,df$b,df$year)

Muhammad



On 05/02/2010 08:25 PM, Ozan Bakis wrote:
> Hi R users,
>
> I would like to add year information to each point in a scatter plot. The
> following
> example shows what i mean:
>
> df=data.frame(year=c(2001,2002,2003),a=c(8,9,7),b=c(100,90,95))
> df
> plot(b~a,data=df)
>
> Now, I would like to see which point belongs to 2001, 2002 and 2003 in the
> above
> graphic.
>
> Thank you very much,
> ozan
>
> 	[[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.
>

> -----Mensaje original-----
> De: r-help-bounces at r-project.org 
> [mailto:r-help-bounces at r-project.org] En nombre de Ozan Bakis
> Enviado el: domingo, 02 de mayo de 2010 21:25
> Para: r-help at r-project.org
> Asunto: [R] adding year information to a scatter plot
> 
> Hi R users,
> 
> I would like to add year information to each point in a 
> scatter plot. The following example shows what i mean:
> 
> df=data.frame(year=c(2001,2002,2003),a=c(8,9,7),b=c(100,90,95))
> df
> plot(b~a,data=df)
> 
> Now, I would like to see which point belongs to 2001, 2002 
> and 2003 in the above graphic.
> 
> Thank you very much,
> ozan
Use text,
df <- data.frame(year=c(2001,2002,2003),a=c(8,9,7),b=c(100,90,95))
df
plot(b~a,data=df,ylim=c(.98*min(b),1.02*max(b)))
text(x=df$a,y=df$b-.01*max(df$b),lab=format(df$year))

____________________________________________________________________________________

Dr. Rub?n Roa-Ureta
AZTI - Tecnalia / Marine Research Unit
Txatxarramendi Ugartea z/g
48395 Sukarrieta (Bizkaia)
SPAIN