This is a subset of my data just so I can learn how to do what I want first. I'm trying to create a bar plot of values from columns and then have a horizontal line representing the average. I was able to create pretty much what I need in Excel but I have very little R experience.
head(data)
O2 O4 O6 O10 O12 AVG
1 4.72 4.7 4.46 4.25 4.94 4.62
Try whit this example:
df <- data.frame(dose=c("T0", "T1", "T2"), len=c(4.5, 14, 27.2))
library(ggplot2) ggplot(data=df, aes(x=dose, y=len)) + geom_bar(stat="identity")+ geom_hline(yintercept = 6,color="red")
Wow thank you so much!! Any idea on how I can order the x axis numerically? 2 4 6 10 12
Check this example:
Perfect! Thank you so much!
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