R help - Mar 2002 - Plotting a x axis from a vector with rownames

> De : owner-r-help at stat.math.ethz.ch
> [mailto:owner-r-help at stat.math.ethz.ch]De la part de Sven Garbade
> Envoy? : lundi 4 mars 2002 15:32
> ? : R-Help
> Objet : [R] Plotting a x axis from a vector with rownames
>
>
> Hi all,
>
> suppose there is a vector y with rownames:
>
> > y
>  cond1  cond2  cond3  cond4
> 78.952 87.308 86.490 74.040
>
> how can I easily plot this vector using the rownames? plot(y)
> gives me a
> plot with a x-axis from 1 to 4 in 0.5 steps, also plot(rownames(y), y)
> and plot(y ~ rownames(y) don't work. I know I can build a x-axis with
> axis(1, ...), but in this case I need a character string like
> c("cond1,
> "", "cond2", "", ...), because the x-axis has
7 tick marks. I'm
> wondering about an easier way (like barplot does).
Is that what you want?
> y<-c(78.952, 87.308, 86.490, 74.040)
> names(y)<-c("cond1",  "cond2",  "cond3", 
"cond4")
> stripchart(y~names(y), vertical=TRUE)
Hope it helps.

Christophe
--
Christophe DECLERCQ, MD
Observatoire R?gional de la Sant? Nord-Pas-de-Calais
13, rue Faidherbe 59046 LILLE Cedex FRANCE
Phone +33 3 20 15 49 24
Fax   +33 3 20 55 92 30
E-mail c.declercq at orsnpdc.org


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Hi all,

suppose there is a vector y with rownames:
> y
 cond1  cond2  cond3  cond4 
78.952 87.308 86.490 74.040 

how can I easily plot this vector using the rownames? plot(y) gives me a
plot with a x-axis from 1 to 4 in 0.5 steps, also plot(rownames(y), y)
and plot(y ~ rownames(y) don't work. I know I can build a x-axis with
axis(1, ...), but in this case I need a character string like c("cond1,
"", "cond2", "", ...), because the x-axis has 7
tick marks. I'm
wondering about an easier way (like barplot does).

Thanks, Sven
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Christophe Declercq wrote:
> Is that what you want?
> 
> > y<-c(78.952, 87.308, 86.490, 74.040)
> > names(y)<-c("cond1",  "cond2", 
"cond3",  "cond4")
> > stripchart(y~names(y), vertical=TRUE)
> 
> Hope it helps.
Yes, exactly. Thanks, Sven
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