[R] creating dummy variables

[Bert Gunter]

Dummy variables are not needed in R.

Bert

Sent from my iPhone -- please excuse typos.

On Apr 20, 2013, at 11:23 AM, shyam basnet <shyamabc2002 at yahoo.com> wrote:

> Hello R-users,
>   
> The below is a snippet of my data:
>  
> 
> fid  crop  year  value   
> 5_1_1  SWHE  1995  171   
> 5_1_1  SWHE  1997  696   
> 5_1_1  BARL  1996  114   
> 5_1_1  BARL  1997  344   
> 5_2_2  SWHE  1995  120   
> 5_2_2  SWHE  1996  511   
> 5_2_2  BARL  1996  239   
> 5_2_2  BARL  1997  349   
>  
> Here, I want to create dummy variables with the names of the content of a column 'crop' in a way that the new variable 'SWHE' would receive a value of 1 if the column 'crop' contains 'SWHE' and 0 otherwise. So, I would have two new variables SWHE and BARL as below:
>  
> 
> fid  crop  year  value  SWHE  BARL   
> 5_1_1  SWHE  1995  171  1  0   
> 5_1_1  SWHE  1997  696  1  0   
> 5_1_1  BARL  1996  114  0  1   
> 5_1_1  BARL  1997  344  0  1   
> 5_2_2  SWHE  1995  120  1  0   
> 5_2_2  SWHE  1996  511  1  0   
> 5_2_2  BARL  1996  239  0  1   
> 5_2_2  BARL  1997  349  0  1   
>  
>  
> Cheers,
> Shyam
> Nepal
>    [[alternative HTML version deleted]]
> 
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