library(ggplot2) setwd("/home/francois/git/decouverte/Timeline") timeset<-data.frame(year=c(1800,1900,1950,2015), text=c('Art ancien','Art moderne','Art contemporain','Aujourd\'hui'), y=0) plot <- ggplot(timeset,aes(x=year,y=0)) + geom_segment(aes(y=0,yend=y,xend=year)) + geom_text(aes(label=text),size=5,vjust=1.5, fontface=3) + geom_point(aes(y=y)) + scale_y_continuous(limits=c(-.25,.25)) + scale_x_continuous(limits=c(1775,2025)) + geom_hline(y=0,size=1,color='dark green') + theme(axis.text.y = element_blank()) + ylab("")+xlab("") png(height=200, width=800) plot dev.off()