[R] how can I delete rows?

[Philipp Pagel]

On Tue, Jul 18, 2006 at 12:25:47PM -0300, raul sanchez wrote:
>   I have the Barro-Lee data set which contains 98 countries and I want
>   to run the regressions only for the Latin America countries, so what
>   do you recomend? How can I delete all the other countries or how can
>   I select the countries of Lat. Am. thank you

>   this is the list of countries
>   SHCODE     COUNTRY  NAME           WBCTRY       (1)       (2)
> _________________________________________________________________
> 
>   1        Algeria                  DZA          +         +
>   2        Angola                   AGO          -         -
>   3        Benin                    BEN          -         +
>   4        Botswana                 BWA          +         +
>   5        Burkina Faso             HVO          -         -
>   6        Burundi                  BDI          +         -
>   7        Cameroon                 CMR          +         +
[...]


Assuming the data is stored in a data frame called bl you could do
something like this:

First you generate a list of all countries you are interested in - e.g.

> set = c('Benin', 'Congo', 'Mali')


And then you subset the data frame with it

> bl[bl$COUNTRY %in% set, ]
   SHCODE COUNTRY NAME WBCTRY X.1. X.2.
3       3   Benin  BEN      -    +   NA
12     12   Congo  COG      -    +   NA
26     26    Mali  MLI      -    +   NA


cu
	Philipp

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Dr. Philipp Pagel                            Tel.  +49-8161-71 2131
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