Dear Everyone,

 

I try to automatically manipulate the data of a variable (class =
factor) like

 

x

220

220a

221

221b

B221

 

Into two variables (class = numeric) like

 

x     y

220   0

220   1

221   0

221   1

221   1

 

y has to carry the information about the class (number or string) of the
former x-Variable.

 

I could do it by hand like

 

x[x == "220a"] <- 220

y[x == "220a"] <- 1

 

but x has way to many expressions.

 

So I wondered if I could use a regular expression like OR ANY OTHER WAY

 

x[x == [0-9]{3}a] <- regular expression

y[x == [0-9]{3}] <- 1

 

 

Thanks a lot

 


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