geom_errorbar disappears when using scale_x_reverse

[JBell]

I am trying to produce a simple scatter plot but with the x scale reversed (as this will be a better way of showing that y (shared species) declines with increasing x (environmental parameter)). The plot works fine with both axes ascending...

envsum$chemo.index <- c(0.56254404, 2.73595615, 2.47705543, 0.01796475)

envsum$sp_shared <- c(66.6, 100.0,  83.9,  62.8)

gShareSP  <- ggplot(envsum, aes(chemo.index, sp_shared))

gShareSP  <- gShareSP + geom_point()

gShareSP  <- gShareSP +  geom_errorbarh(xmax=ch.ind+seCh, xmin=ch.ind-seCh)

gShareSP  <- gShareSP + geom_smooth(method="lm", se=F, colour="black")

gShareSP  <- gShareSP + theme_bw()

gShareSP

but when I add the line

gShareSP  <- gShareSP + scale_x_reverse()

errorbars disappear (except one which moves to a random point on the plot)

I didn't think scale_x_reverse should alter the positions of the error bars and I can't find the fix to stop it happening

Thanks in advance for any insight

[JBell]

Edit for df - sorry for confusion

envsum <- data.frame(chemo.index = c(0.56254404, 2.73595615,2.47705543, 0.01796475),
                                    sp_shared = c(66.6, 100.0, 83.9, 62.8),

                                    seCh = c(0.115674244, 0.182706874, 0.231441854, 0.004465524))

On Tuesday, October 28, 2014 11:44:36 AM UTC, JBell wrote:

I am trying to produce a simple scatter plot but with the x scale reversed (as this will be a better way of showing that y (shared species) declines with increasing x (environmental parameter)). The plot works fine with both axes ascending...

envsum$chemo.index <- c(0.56254404, 2.73595615, 2.47705543, 0.01796475)

envsum$sp_shared <- c(66.6, 100.0,  83.9,  62.8)

gShareSP  <- ggplot(envsum, aes(chemo.index, sp_shared))

gShareSP  <- gShareSP + geom_point()

gShareSP  <- gShareSP +  geom_errorbarh(xmax=envsum$chemo.index+seCh, xmin=envsum$chemo.index-seCh)

gShareSP  <- gShareSP + geom_smooth(method="lm", se=F, colour="black")

gShareSP  <- gShareSP + theme_bw()

gShareSP

[Vivek Patil]

The geom_errorbarh entry should have been within aes. This should work.

library(ggplot2)

envsum <- data.frame(chemo.index = c(0.56254404, 2.73595615,2.47705543, 0.01796475),

                     sp_shared = c(66.6, 100.0, 83.9, 62.8),

                     seCh = c(0.115674244, 0.182706874, 0.231441854, 0.004465524))

gShareSP  <- ggplot(envsum, aes(chemo.index, sp_shared))

gShareSP  <- gShareSP + geom_point()

gShareSP  <- gShareSP +  geom_errorbarh(aes(xmax=envsum$chemo.index+envsum$seCh, xmin=envsum$chemo.index-envsum$seCh))

gShareSP  <- gShareSP + geom_smooth(method="lm", se=F, colour="black")

gShareSP  <- gShareSP + theme_bw()

gShareSP

gShareSP  <- gShareSP + scale_x_reverse()

gShareSP

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[JBell]

Thank you Vivek, that works perfectly

On Tuesday, October 28, 2014 11:44:36 AM UTC, JBell wrote: