[R] Looping through a list of objects & do something...

TLowe rcl7820 at warnell.uga.edu
Tue Feb 19 19:51:15 CET 2008


Hey Folks,

Could somebody show me how to loop through a list of dataframes?  I want to
be able to generically access their elements and do something with them.

For instance, instead of this:

df1<- data.frame(x=(1:5),y=(1:5));
df2<- data.frame(x=(1:5),y=(1:5));
df3<- data.frame(x=(1:5),y=(1:5));
plot(df1$x,df1$y);
plot(df2$x,df2$y);
plot(df3$x,df3$y);

I would like to do something like:
(pseudocode)
dfarray[1] = df1
dfarray[2] = df2
dfarray[3] = df3
for (each i in dfarray) {
  plot(i$x, i$y);
}

Can this be done in R?

Thanks.
Tripp


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