[datatable-help] colwise division

[Serdar Akin]

Hi,

I have a problem that I want to divide column "b" with all the other columns, in this case "c" and "d" , is there a nice way to do this?

Further I would like to divide columns "b,c,d" with row 1 form column "b" to create a index?


a <- data.table(year = 2001:2010, b = 1:10, c = 11:20, d = 21:30)


Regards Serdar


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