利用ggplot2绘制line plot

使用ggplot2绘制折线图
输入文件格式：

depth count
1 560375582
2 38362613
3 10277188
4 6580683
5 7307379

绘图脚本

library(ggplot2)

mytheme2 <- theme_bw() + theme(legend.title=element_blank(), panel.grid.major = element_blank(), panel.grid.minor = element_blank(),

                               axis.title.x = element_blank(),
                               axis.title.y = element_text(size=8,angle=90),
                               #axis.title.y = element_text(size=8,angle=90),
                               axis.text.x=element_text(size=9,angle=0),
                               axis.text.y = element_text(size=7),  ##- biao qian
                               #axis.ticks.y = element_blank(), ##- ke du xian 
                               legend.position="none",
                               legend.key.size = unit(0.4,'cm'),
                               legend.text = element_text(size=6,angle=0),
                               strip.text = element_text(size=8)

                              )


argv<-commandArgs(TRUE)

data <- read.table(argv[1], header = T, sep=" ")

p1 <- ggplot(data, aes(x=depth, y=count)) +
      geom_line(color="red") + 
      xlim(0, 30) + 
      ylab("Count") + mytheme2
     

ggsave(filename="kmer.depth.count.pdf",plot=p1,height=4,width=5)