The bars still needs to be dodged for this to work, though: ggplot(aa, aes(group, mean, fill = group2))+ If the size of the errors is an important thing for you to display, your best option might be to use coord_cartesian to zoom in to the relevant part of the y axis. Although there are ways round this, the height issue means that these are not really worth attempting, because the errors are effectively too small to be shown on the plot. You get strange results when you try to stack errorbars to stack however. The other issue is that the errorbars have position = "identity", which means they all sit at the same height instead of stacking. Width = 0.2, position = position_dodge(width = 0.8)) + Geom_errorbar(aes(ymin =mean-se, ymax =mean + se, group = group2), Position = position_dodge(width = 0.8)) + Geom_col(width = 0.7, size = 0.2, alpha = 1, color = 'black', The effect can be improved a little by dodging instead of stacking, since you can effectively make everything 6 times taller, but the error bars remain very small: ggplot(aa, aes(group, mean, fill = group2))+ Even with a relatively large panel, this means the error bar will be between 1 and 3 pixels tall, effectively appearing as a flat line. That means that your standard errors vary between 1/2500 and 1/150 the height of your panel.
The size of each standard error ranges from 0.012 to 0.20, meaning your error bar height varies from 0.024 to 0.40, but the y axis ranges from 0 to 60. The first is that your standard errors are very small compared to the bars themselves. Here is the effect I expected:Īny suggestions are welcome! Thank you advance! Legend.text = element_text(family="Times",size = 14, colour= 'black'))+ Plot.title = element_text(family="Times",size = 14),Ī = element_text(family="Times",size = 14, colour= 'black'),Ī = element_text(family="Times",size = 14, colour= 'black'), Text = element_text(family="Times",size=14), Theme(id = element_blank(), panel.background = element_blank())+ Labs(x ='', y = 'Organic matter (mg/kg)', fill = 'sample') + Theme(legend.text=element_text(family="Times",size=10))+ Geom_errorbar(aes(ymin =mean-se, ymax =mean + se),width=0.2,position="identity") + P<-ggplot(aa, aes(group,mean,fill=group2))+ Here is my original code: aa<-structure(list(sample = c("L-FF", "L-FF", "L-FF", "L-FF", "L-FF", The error bar doesn show up when plotting.
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