set.seed(345)
library(ggplot2)
library(RColorBrewer)
ngroup=30
names=paste("G_",seq(1,ngroup),sep="")
DAT=data.frame()
for(i in seq(1:30)){
data=data.frame( matrix(0, ngroup , 3))
data[,1]=i
data[,2]=sample(names, nrow(data))
data[,3]=prop.table(sample( c(rep(0,100),c(1:ngroup)) ,nrow(data)))
DAT=rbind(DAT,data)
}
colnames(DAT)=c("Year","Group","Value")
DAT=DAT[order( DAT$Year, DAT$Group) , ]
coul = brewer.pal(12, "Paired")
coul = colorRampPalette(coul)(ngroup)
coul=coul[sample(c(1:length(coul)) , size=length(coul) ) ]
ggplot(DAT, aes(x=Year, y=Value, fill=Group )) +
geom_area(alpha=1 )+
theme_bw() +
#scale_fill_brewer(colour="red", breaks=rev(levels(DAT$Group)))+
scale_fill_manual(values = coul)+
theme(
text = element_blank(),
line = element_blank(),
title = element_blank(),
legend.position="none",
panel.border = element_blank(),
panel.background = element_blank())
