ggplot2 geom_bar arrangement

You just have to change the levels of the factor ...

library(ggplot2)

Lab = c(letters[4:6], letters[1:3])
valuex = c(3.1,2.3,0.4,-0.4,-1.2,-4.4)
df <- data.frame(Lab,valuex)

# set the factor levels to the same order as observed in the data frame
df$Lab <- factor(df$Lab, levels=unique(df$Lab))

px <- ggplot(df,aes(Lab,valuex,label=Lab)) +
  geom_text(aes(y=0)) +
  geom_bar(stat = "identity")
px

Jean

On Tue, Jun 27, 2017 at 1:43 PM, Brian Smith <bsmith030465 at gmail.com>
wrote:

Hi,

I was trying to draw a geom_bar plot. However, by default, the bars are
arranged according to the label, which I don't want. I want the bars to
appear exactly as they appear in the data frame. For example in the code:

 Lab=c(letters[4:6],letters[1:3])
 valuex = c(3.1,2.3,0.4,-0.4,-1.2,-4.4)
 df <- data.frame(Lab,valuex)
 px <- ggplot(df,aes(Lab,valuex,label=Lab)) + geom_text(aes(y=0)) +
geom_bar(stat = "identity")
 px


The default arranges the bars in order 'a' through 'f', but I want them
arranged as per df.

How can I do this?

thanks!

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