Hi,
I know how to convert a factor-variable into a numeric variable via
as.numeric().
But how can I control the values that are assigned?
For example, I have this factor-variable:
z - c(male, male, female)
z - as.factor(z)
And I want to convert male in 3 and female into the numeric
I think you have to recode the derived variable of as.numeric(z).
On Sun, Jan 18, 2009 at 12:40 AM, Jörg Groß jo...@licht-malerei.de wrote:
Hi,
I know how to convert a factor-variable into a numeric variable via
as.numeric().
But how can I control the values that are assigned?
For
BTW, a better way to convert factor into a numeric variable is to use
unclass().
On Sun, Jan 18, 2009 at 12:40 AM, Jörg Groß jo...@licht-malerei.de wrote:
Hi,
I know how to convert a factor-variable into a numeric variable via
as.numeric().
But how can I control the values that are
On Sat, 17 Jan 2009, J?rg Gro? wrote:
Hi,
I know how to convert a factor-variable into a numeric variable via
as.numeric().
But how can I control the values that are assigned?
For example, I have this factor-variable:
z - c(male, male, female)
z - as.factor(z)
And I want to convert
ifelse is your friend:
z - c(male, male, female)
z - as.factor(z)
z - ifelse(z == male, 3, 5)
z
[1] 3 3 5
class(z)
[1] numeric
--
David Winsemius
On Jan 17, 2009, at 11:40 AM, Jörg Groß wrote:
Hi,
I know how to convert a factor-variable into a numeric variable via
On Sat, 17 Jan 2009, Charles C. Berry wrote:
On Sat, 17 Jan 2009, J?rg Gro? wrote:
Hi,
I know how to convert a factor-variable into a numeric variable via
as.numeric().
But how can I control the values that are assigned?
For example, I have this factor-variable:
z - c(male, male,
ronggui wrote:
I think you have to recode the derived variable of as.numeric(z).
The easiest way is probably to use indexing:
z - c(male, male, female)
z - factor(z)
c(5,3)[z]
[1] 3 3 5
or, slightly more foolproof
c(male=3,female=5)[as.character(z)]
male male female
3 3
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