Inverting Y axis

[Pablo Bernabeu]

Hi all,

I've been trying to find out how to invert the Y axis but to no avail. I would really appreciate any of your help. Please find the code below.

Best regards

_______________________________________________

plot = ggplot(data, aes(x=X, y=Y, color=Z)) + 

  geom_line(size=1, alpha = 1)+

  scale_linetype_manual(values=c(1,1))+

  scale_y_continuous(limits=c(-7, 7), breaks=seq(-7,7,by=1))+ 

  scale_x_continuous(limits=c(-200,800),breaks=seq(-200,800,by=100), 

  labels=c("-200","-100","0","100","200","300","400","500","600","700","800"))+

  ggtitle("title")+

  ylab("Amplitude")+

  xlab("Time")+

  theme_bw() +

  geom_vline(xintercept=0) +

  geom_hline(yintercept=0)

[Zack Weinberg]

Does scale_y_reverse() do what you want? If it doesn't, please show
us the plot you get and tell us what about it is wrong. It would also
help if we could see some example data.

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[Pablo Bernabeu]

Thank you, Zack. As it turned, I just received a reply on CrossValidated that worked well. This solution was inverting the polarity of Y in the mapping, aes(y = -Y), and then adding , labels = rev within scale_y_continuous(). 

I had tried scale_y_reverse() earlier but it didn't work.

Best regards

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