R Plot in a for loop

Question

I quite a few data sets that I would like to plot using a for loop. I make a list using

dflist <- c('Set1', 'Set2','Set3', 'Set4')

Then I try to do:

for (i in dflist) {
   plot(i$var1,i$var2)
}

Which does not work. Could anyone sort me out here?

i$var1 throws an exception. You need a better reproducible example — Andrew Cassidy
– Andrew Cassidy, Commented Jan 27, 2015 at 14:14

NicE · Accepted Answer · 2015-01-27 14:18:26Z

1

Try using dflist<-list(set1,set2) otherwise you get a list of individual var1 and var2 vectors in dflist

answered Jan 27, 2015 at 14:18

NicE

21.5k3 gold badges56 silver badges72 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

koekenbakker · Accepted Answer · 2015-01-27 14:33:43Z

1

You could use get for this, which 'gets' the object associated with the supplied name.

# two data frames
a = data.frame(x=1:10,y=sqrt(1:10)); b=data.frame(x=1:10,y=exp(1:10))

par(mfrow=c(2,1))
dfs = c('a', 'b')
for (i in dfs){
    plot(get(i)$x, get(i)$y, type='o')
}

Or apply to avoid a loop, applying a custom function to each item in the list.

par(mfrow=c(2,1))
dflist = list(a,b)
lapply(X=dflist, FUN = function(x) plot(x$x, x$y, type='o')

answered Jan 27, 2015 at 14:33

koekenbakker

3,6042 gold badges23 silver badges31 bronze badges

Collectives™ on Stack Overflow

R Plot in a for loop

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related