[R] loop in function

From: <sumfleth_at_geographie.uni-kiel.de>
Date: Sat, 05 May 2007 17:31:07 +0200 (CEST)

Dear Mailing-List,
I think this is a newbie question. However, i would like to integrate a loop in the function below. So that the script calculates for each variable within the dataframe df1 the connecting data in df2. Actually it takes only the first row. I hope that's clear. My goal is to apply the function for each data in df1. Many thanks in advance. An example is as follows:

df1 <-data.frame(b=c(1,2,3,4,5,5,6,7,8,9,10)) df2 <-data.frame(x=c(1,2,3,4,5), y=c(2,5,4,6,5), z=c(10, 8, 7, 9, 3)) attach(df2)
myfun = function(yxz) (x + y)/(z * df1$b) df1$goal <- apply(df2, 1, myfun)



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