Order Stacked Bar Graph in ggplot [duplicate]

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The general (non ggplot-specific) answer is to use reorder() to reset the factor levels in a categorical column, based on some function of the other columns.

## Examine the default factor order
levels(samp.data$fullname)

## Reorder fullname based on the the sum of the other columns
samp.data$fullname <- reorder(samp.data$fullname, rowSums(samp.data[-1]))

## Examine the new factor order
levels(samp.data$fullname)
attributes(samp.data$fullname)

Then just replot, using code from the original question

md <- melt(samp.data, id=(c("fullname")))
temp.plot<-ggplot(data=md, aes(x=fullname, y=value, fill=variable) ) + 
               geom_bar()+ 
               theme(axis.text.x=theme_text(angle=90)) + 
               labs(title = "Score Distribtion")
## ggsave(temp.plot,filename="test.png")

enter image description here

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