log-log scale y axis ggplot

Question

I have two dataframes:

df1 <- data.frame(runif(100,0,0.02), 1:100)
colnames(df1) <- c("a","b")

df2 <- data.frame(runif(100,0,0.3), 1:100)
colnames(df2) <- c("a","b")

I need two scatterplots (one for each dataframe) side by side, with a log-log scale on y axis that looks exactly like this (external yticks, minor y ticks between all the labels and so) but limited to 1 (not 10):

I tried (scatterplot of 1 dataframe):

ggplot(df1, aes(x=factor(b), y=a)) +
  geom_point() +
  scale_y_continuous(trans = log10_trans(),
                     breaks = trans_breaks("log10", function(x) 10^x),
                     labels = trans_format("log10", math_format(10^.x))) +
  annotation_logticks()

but I still don't get what I want

What code did you try ?

dc37
– dc37

2019-12-05 16:30:26 +00:00
Commented Dec 5, 2019 at 16:30 — dc37
– dc37, Commented Dec 5, 2019 at 16:30

Gianmarco M · Accepted Answer · 2019-12-05 17:09:47Z

1

adding limits=c(10^-4,1) and changing labels=comma did the work!

Final code:

ggplot(df1, aes(x=factor(b), y=a)) +
  geom_point() +
  scale_y_continuous(trans = log10_trans(),
                     breaks = comma,
                     labels = trans_format("log10", math_format(10^.x)),
                     limits=c(10^-4,1)) +
  annotation_logticks()

besides, hints how to display only significative figures (ie 1 instead of 1.0000, or 0.1 instead of 0.1000) in the comma function? thanks

edited Dec 5, 2019 at 17:09

answered Dec 5, 2019 at 16:58

Gianmarco M

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1 Comment

Gianmarco M Over a year ago

solved. for getting read of trailing 0: Instead of labels = comma use labels = function(x) format(x, scientific = FALSE, drop0trailing = T)

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