[R] selection of multiple subscripts

[e-letter]

On 13/01/2010, e-letter <inpost at gmail.com> wrote:
> On 13/01/2010, Duncan Murdoch <murdoch at stats.uwo.ca> wrote:
>> 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),])
>>
> Thanks, I now understand the concatenate function would help but
> forgot the syntax. Anyway I've just realised that the search database
> for R yields no result for '?concatenate' which is surprising.
>
For the benefit of other novices: for the data set, the subscripts
should have read:

1:3

and

8:9

Alternatively, the data set should have included:

10 j

:)