error in reorder the bars of ggplots

Question

[Kai_Qi]

I am using ggplot to plot the geneontology results: I use the following code:

p <- ggplot(data=mydata_2, aes(x=Term, y=logPValue), size =1) + geom_bar(stat='identity')

It worked. But When I want to reorder the columns from high to low using y value using:

p <- ggplot(data=mydata_2, aes(x=(Term, -logPValue), y=logPValue), size =0.01) + geom_bar(stat='identity')

it showed an error:

error: unexpected ',' in "p <- ggplot(data=mydata_2, aes(x=(Term,"

Why this happened. I searched a while. A lot of people is using this method.

[Prakash]

x =reorder(Term, -logPValue) should work

[Asaf]

x=(Term, -logPValue) there's your error, did you forget the function?

[Kai_Qi]

I saw a lot of people say it will work. But It did not work in my hand. In the end, I use mutate(Term = fct_reorder(Term, logPValue)) to make it work.

I still do not know the reason.