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district_unique
2010 Jan 21
2
(no subject)
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