[R] convert data frame: two variables into _one_ binary variable

[Carl Witthoft]

In R,  as.logical() and other functions treat anything >0 as TRUE.  Thus:

Rgames> foo<-sample(0:5,10,rep=TRUE)
Rgames> foo
 [1] 0 5 1 0 1 5 2 5 4 5
Rgames> as.logical(foo)
 [1] FALSE  TRUE  TRUE FALSE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE

For your case,  simply  (womensrole$agree>womensrole$disagree) will return
the logical vector you want.
Just for info,
In R,  as.logical() and other functions treat anything >0 as TRUE.  Thus:

Rgames> foo<-sample(0:5,10,rep=TRUE)
Rgames> foo
 [1] 0 5 1 0 1 5 2 5 4 5
Rgames> as.logical(foo)
 [1] FALSE  TRUE  TRUE FALSE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE



Liviu Andronic wrote
> Dear all,
> I am trying to convert the following data frame into a format more
> useful for me:
>> library("HSAUR2", lib.loc="C:/Program Files/R/R-3.0.2/library")
> Loading required package: tools
> 
> Attaching package: ‘HSAUR2’
> 
> The following object is masked _by_ ‘.GlobalEnv’:
> 
>     womensrole
> 
>> head(womensrole)
>   education gender agree disagree sexe
> 1         0   Male     4        2    0
> 2         1   Male     2        0    0
> 3         2   Male     4        0    0
> 4         3   Male     6        3    0
> 5         4   Male     5        5    0
> 6         5   Male    13        7    0
> 
> 
> In 'womensrole', how do I convert 'agree' and 'disagree' variables
> into one proper binary variable, say:
>   education gender agree sexe
> 1         0   Male     TRUE           0
> 2         0   Male     TRUE           0
> 3         0   Male     TRUE           0
> 4         0   Male     TRUE           0
> 5         0   Male     FALSE           0
> 6         0   Male     FALSE           0
> 7         1   Male     TRUE           0
> 8         1   Male     TRUE           0
> 9         2   Male     TRUE           0
> 10         2   Male     TRUE           0
> 11         2   Male     TRUE           0
> 12         2   Male     TRUE           0
> [..]
> 
> I'm sure there is an easy way to do this (in the form of 'melt',
> 'cast', etc.), but I'm not sure how to approach the problem.
> 
> Regards,
> Liviu
> 
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