a for loop to plot graphs in R

Question

I got a dataset that looks like this

a    b    c    d
x    1.1  lol  xyz
x    1.4  lal  xyw
y    1.2  lel  xyz
x    1.4  lol  xyw
y    1.8  lel  xyz

I get my plot with ggplot(filter(df, c=="lol"), aes(x=b)) + geom_bar() + facet_wrap( ~ d) + xlab("xlab") + ylab ("ylab"). I am trying to plot this for every c factor with a for loop, but I am not sure how to do this.

Gregor Thomas · Accepted Answer · 2020-03-31T15:22:51.820

1

plot_list = list()
for(uniq_c in unique(df$c)) {
  plot_list[[uniq_c]] = ggplot(filter(df, c == uniq_c), aes(x = b)) +
    geom_bar() +
    facet_wrap( ~ d) +
    xlab("xlab") + ylab ("ylab")
}

print(plot_list[["lal"]]) # print a single plot
lapply(plot_list, print)  # print all plots

edited Mar 31 '20 at 15:22

answered Mar 30 '20 at 20:28

Gregor Thomas

136,190
20
167
294

I got. Error: unexpected SPECIAL in "for(uniq_c %in%". Am I missing a package or something? – murpholinox Mar 31 '20 at 15:20
1

My typo - should have used `in` not `%in%`. Fixed now. – Gregor Thomas Mar 31 '20 at 15:22

a for loop to plot graphs in R

1 Answers1