How to remove blank from geom_line in ggplot2?

Question

geom_line has big gap in line two sides, how to remove this gap!

geom_line

R scripts is listed as follow,

p <- ggplot(singJanS)+ geom_line(aes(x=sn,y=diff))
p <- p  + geom_hline(yintercept=seq(-0.8,0.8,by=0.4), linetype=2, colour="grey") +
  geom_vline(xintercept=seq(15,744,by=24), linetype=6, colour="red") +
  geom_vline(xintercept=seq(23,744,by=24), linetype=6, colour="blue") +
  ylab(Delta~T~'  ('~degree~C~')')+xlab("")+
  scale_x_continuous(breaks = c(0,120,240,360,480,600,720))+
  scale_y_continuous(breaks = c(-0.8,-0.4,0,0.4,0.8)) +theme_bw()

Can you provide the result of `dput(singJanS)` so that we can reproduce this problem? — Z.Lin, Sep 01 '17 at 09:30
Also, see this question https://stackoverflow.com/questions/3606697/how-to-set-limits-for-axes-in-ggplot2-r-plots — Vincent Guillemot, Sep 01 '17 at 09:33
Try adding `expand = c(0, 0)` to your `scale_x_continuous()` line? — Z.Lin, Sep 01 '17 at 09:36

Marco Sandri · Answer 1 · 2017-09-01T09:59:18.610

The solution suggested by @Z.Lin works correctly.
The two gaps are removed if you add expand = c(0, 0) to scale_x_continuous().

set.seed(1)
singJanS <- data.frame(sn=1:740, diff=rnorm(740)/3)

p <- ggplot(singJanS)+ geom_line(aes(x=sn,y=diff))
p <- p  + geom_hline(yintercept=seq(-0.8,0.8,by=0.4), linetype=2, colour="grey") +
  geom_vline(xintercept=seq(15,744,by=24), linetype=6, colour="red") +
  geom_vline(xintercept=seq(23,744,by=24), linetype=6, colour="blue") +
  ylab(Delta~T~'  ('~degree~C~')')+xlab("")+
  scale_x_continuous(breaks = c(0,120,240,360,480,600,720),expand = c(0, 0))+
  scale_y_continuous(breaks = c(-0.8,-0.4,0,0.4,0.8)) +theme_bw()
p

It is OK! Thank you very much! – H.W ZHu Sep 01 '17 at 09:53 — H.W ZHu, Sep 01 '17 at 09:53

score 0 · Answer 2 · answered Sep 01 '17 at 09:11

0

Try adding to your code

    + scale_x_continuous(limits = c(0, 750))

answered Sep 01 '17 at 09:11

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Thank you! but It's invaild! – H.W ZHu Sep 01 '17 at 09:21

How to remove blank from geom_line in ggplot2?

2 Answers2