Hi,

I am having trouble plotting the graph I need given the follow kind of data

> xxx <- data.frame(
               "x"=c(1,2,3,4,5),
               "y1"=c(2,4,3,5,6),
               "y2"=c(3,4,6,3,1),
               "y3"=c(1,3,5,7,3),
               "z1"=c(1,NA,3,5,NA),
               "z2"=c(2,NA,4,6,NA) )
> xxx
  x y1 y2 y3 z1 z2
1 1  2  3  1  1  2
2 2  4  4  3 NA NA
3 3  3  6  5  3  4
4 4  5  3  7  5  6
5 5  6  1  3 NA NA

What I need is the following

- One graph 
- y1, y2, y3 plotted as seperate lines vs x
- z1, z2 give the range of the value of z, and need to be plotted as error bars or confidence intervals vs x

Many thanks for any help,
Regards,
David

       
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