[R] subsets

[Keith Jewell]

I did try it. It gave me
[[1]]
   id diagnosis
1   1        ah
5   3        ah
7   4        ah
8   4       ihd
10  5       ihd

[[2]]
  id diagnosis
1  1        ah
2  2        ah
5  3        ah
7  4        ah

[[3]]
   id diagnosis
3   2       ihd
8   4       ihd
10  5       ihd

Which isn't what the OP asked for

> Q: How to make three data sets:
>        1. Patients with ah and ihd
  id diagnosis
2  2        ah
3  2       ihd
4  2        im
7  4        ah
8  4       ihd
9  4    angina

>        2. Patients with ah but no ihd
  id diagnosis
1  1        ah
5  3        ah
6  3    stroke

>        3. Patients with  ihd but no ah?
   id diagnosis
10  5       ihd

Regards,

KJ
---------------------------------
"Henrique Dallazuanna" <wwwhsd at gmail.com> wrote in message 
news:AANLkTikQnw_hNtDyXdrJ+yTyqf6tGHLmH0qsLEoufTdJ at mail.gmail.com...
Try this:

lapply(list(c('ah', 'ihd'), 'ah', 'ihd'), function(x)subset(aDF, diagnosis
== x))


On Thu, Jan 20, 2011 at 6:53 AM, Den <d.kazakiewicz at gmail.com> wrote:

> Dear R people
> Could you please help.
>
> Basically, there are two variables in my data set. Each patient ('id')
> may have one or more diseases ('diagnosis'). It looks like
>
> id      diagnosis
> 1       ah
> 2       ah
> 2       ihd
> 2       im
> 3       ah
> 3       stroke
> 4       ah
> 4       ihd
> 4       angina
> 5       ihd
> ..............
> Q: How to make three data sets:
>        1. Patients with ah and ihd
>        2. Patients with ah but no ihd
>        3. Patients with  ihd but no ah?
>
>  If you have any ideas could just guide what should I look for. Is a
> subset or aggregate, or loops, or something else??? I am a bit lost. (F1
> F1 F1 !!!:)
> Thank you
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

[[alternative HTML version deleted]]




--------------------------------------------------------------------------------


>