[R] selection of multiple subscripts

[Duncan Murdoch]

On 13/01/2010 7:36 AM, e-letter wrote:
> Readers,
> 
> For a data set 'x':
> 
> 1 a
> 2 b
> 3 c
> 4 d
> 5 e
> 6 f
> 7 g
> 8 h
> 9 i
> 
> How to select multiple subscripts to plot? For example to plot values
> 1:3 and 9:10:
> 
> plot(x[1:3,1],x[,2])
> 
> and
> 
> plot(x[9:10,1],x[,2])
> 
> into one plot?

Neither of those will work, because your x[,2] vector is longer than the 
other vector.

What you want is something like this:

plot(col2 ~ col1, data=x[c(1:3, 9:10),])

where col1 and col2 are the names of those two columns.

Duncan Murdoch