On Jan 20, 2010, at 9:34 PM, teurlai magali wrote:
Hi
is there a way in R to create a new column vector with the numbers
of 2 others columns simply appended?
Example : I have a column with provinces codes (1 to 19)
I have a second column with districts codes (1 to ##, depending on
the province)
I want to create a third column with a code that would be unique for
each district:
Province District District_Unique
1 1 11
1 2 12
13 2 132
Better to put in a separator. That way you can tell Prov=1, Distr=11
from Prov=11, Distr=1. Try:
df$Distric_Unique <- with(df, paste(Province, District, sep=".") )
I can create a loop, but it becomes complicated with numerous data
Thanks for your help
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