R help - Jul 2010 - Data Labels in a barchart (Lattice or otherwise)

Hi,

Can anyone please help me with how I could add labels with the value for
each bar in a barchart? (similar to how data labels can be added in Excel) I
have done a lot of searching but havent been lucky.

Thanks,
Raoul
-- 
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Sent from the R help mailing list archive at Nabble.com.

On Jul 4, 2010, at 11:43 PM, RaoulD wrote:
>
> Hi,
>
> Can anyone please help me with how I could add labels with the value  
> for
> each bar in a barchart? (similar to how data labels can be added in  
> Excel) I
> have done a lot of searching but havent been lucky.
This is generally pretty easy with text() at least if you are using  
base graphics. If it is not clear after reading the help page then  
post an examply with whatever barchart function you have chosen to  
use. If it's the lattice barchart there is an ltext example  
immediately before the barchart example that quickly can be grafted  
into the barchart code.

David Winsemius, MD
West Hartford, CT

Thank You David. Yes, I am using the lattice barchart and have managed to add
data labels, however, they tend to be on the tip of each bar and are
difficult to read as they are partially on the bar. Any help would be
greatly appreciated.

This is the code I am using:
 levels(PR_SUMMARY$Bucket)=c("0-3 months","3-9
months","9-15 months","15-18
months")
 barchart(PrimaryReason ~ cInteractions| Bucket + Type, data = PR_SUMMARY,
layout = c(4, 2),col="lightgreen",main="COMPARISON - PRIMARY
REASON",
           sub="L & R",xlab="Number of
Customers",ylab="Primary Reasons",
           auto.key = list(title = "COMPARISON - PRIMARY
REASON",columns=2,points = FALSE, rectangles =          TRUE,space=
"right"
),scales = list(x = list(abbreviate=TRUE,minlength=5,rot=45)),
           panel = function(x,y,subscripts,groups,...){
                panel.barchart(x,y,...)
                ltext(x,y,label=round(PR_SUMMARY$cInteractions,1),
cex=.99,rot=45)
                border="transparent"}) 

I dont really understand the "ltext" part and found it with some other
code,
but it works.

Thanks again,
Raoul
-- 
View this message in context:
http://r.789695.n4.nabble.com/Data-Labels-in-a-barchart-Lattice-or-otherwise-tp2278027p2278646.html
Sent from the R help mailing list archive at Nabble.com.

On Jul 5, 2010, at 1:14 PM, RaoulD wrote:
>
> Thank You David. Yes, I am using the lattice barchart and have  
> managed to add
> data labels, however, they tend to be on the tip of each bar and are
> difficult to read as they are partially on the bar. Any help would be
> greatly appreciated.
>
> This is the code I am using:
> levels(PR_SUMMARY$Bucket)=c("0-3 months","3-9
months","9-15
> months","15-18
> months")
> barchart(PrimaryReason ~ cInteractions| Bucket + Type, data =  
> PR_SUMMARY,
> layout = c(4, 2),col="lightgreen",main="COMPARISON - PRIMARY
REASON",
>           sub="L & R",xlab="Number of
Customers",ylab="Primary
> Reasons",
>           auto.key = list(title = "COMPARISON - PRIMARY
> REASON",columns=2,points = FALSE, rectangles =          TRUE,space=  
> "right"
> ),scales = list(x = list(abbreviate=TRUE,minlength=5,rot=45)),
>           panel = function(x,y,subscripts,groups,...){
>                panel.barchart(x,y,...)
>                ltext(x,y,label=round(PR_SUMMARY$cInteractions,1),
> cex=.99,rot=45)
# if you add or subtract a small amount from "y" in the prior line it
will move the labels up or down.
>                border="transparent"})
>
> I dont really understand the "ltext" part and found it with some
> other code,
> but it works.
>
> Thanks again,
> Raoul
> -- 

David Winsemius, MD
West Hartford, CT

> fortune(197)
If anything, there should be a Law: Thou Shalt Not Even Think Of Producing A
Graph That Looks Like Anything From A Spreadsheet.
   -- Ted Harding (in a discussion about producing graphics)
      R-help (August 2007)

Also read the discussion started with:
http://tolstoy.newcastle.edu.au/R/e2/help/07/08/22858.html



-- 
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 RaoulD
> Sent: Sunday, July 04, 2010 9:44 PM
> To: r-help at r-project.org
> Subject: [R] Data Labels in a barchart (Lattice or otherwise)
> 
> 
> Hi,
> 
> Can anyone please help me with how I could add labels with the value
> for
> each bar in a barchart? (similar to how data labels can be added in
> Excel) I
> have done a lot of searching but havent been lucky.
> 
> Thanks,
> Raoul
> --
> View this message in context: http://r.789695.n4.nabble.com/Data-
> Labels-in-a-barchart-Lattice-or-otherwise-tp2278027p2278027.html
> Sent from the R help mailing list archive at Nabble.com.
> 
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> PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> and provide commented, minimal, self-contained, reproducible code.