[R] Multiple if function
Maria Lathouri
mlathouri at yahoo.gr
Tue Sep 15 12:56:37 CEST 2015
Dear all,
I am writing as I would like your help. I have a dataframe with two columns, ASB and Flow, where the the first one has values 1, 2 or 3 and the second flow data. Something like that:
ASBclass Flow1 11.51 9.2
2 10.5
3 6.7 ... ...
I would like to produce a third column named eg. deviation where it would get me values based on if ASBclass is 1, multiply Flow by 0.1; if ASBclass is 2 then multiply Flow by 0.15 and if ASBclass is 3 then multiply by 0.2.
If (ASBclass=1) { deviation<-Flow*0.1}
If (ASBclass=2) { deviation<-Flow*0.15}If (ASBclass=1) { deviation<-Flow*0.2}
I am not sure whether I should add the else function and how can I combine these separate functions.
Can anyone help me on that?
Thank you very much.
Kind regardsMaria
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