R语言画图教程-2

这是一套为初学者学习R语言画图、写论文所准备的教程，开发不易，且看且珍惜

# Give a specific order:

data$group <- factor(data$group , levels=c("B", "A", "D", "E", "G", "F", "C") )

# Plot again

ggplot(data, aes(x=time, y=value, fill=group)) +

geom_area()

# Note: you can also sort levels alphabetically:

myLevels <- levels(data$group)

data$group <- factor(data$group , levels=sort(myLevels) )

# Note: sort followinig values at time = 5

myLevels <- data %>%

filter(time==6) %>%

arrange(value)

data$group <- factor(data$group , levels=myLevels$group )