Dear CE.KA,
If 'x' is your data, you could do something like the following:

matplot(as.factor(c('1990','1992')),t(x[,-2]),type='l',
           xaxt='n',xlab='Year',ylab="Some label here",lty=1)
axis(1,c(1990,"","","",1992),c(1990,"","","",1992))
legend('topleft',paste('Observation',1:5),col=1:5,lty=1,cex=0.8)

See ?matplot, ?axis and ?legend for more details.

HTH,

Jorge


On Mon, Mar 23, 2009 at 5:33 PM, CE.KA <ce.kaya75@yahoo.fr> wrote:

>
> Hi R users,
>
> Imagine the folowing data frame
>      1990        1991       1992
> 1       5          20          6
> 2       15          1          11
> 3       3           14         22
> 4       20          8          55
> 5       10          3          14
>
> Is there a way to build a graphic in which:
> - 1 curve represents the observation 1 during 1990 & 1992
> - 1 curve represents the observation 2 during 1990 & 1992
> - 1 curve represents the observation 3 during 1990 & 1992
> - 1 curve represents the observation 4 during 1990 & 1992
> - 1 curve represents the observation 5 during 1990 & 1992
>
> Sincerely yours
> --
> View this message in context:
> http://www.nabble.com/Graphic-with-several-curves-tp22669675p22669675.html
> Sent from the R help mailing list archive at Nabble.com.
>
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