GGplot week 1

在课程资源下载本周作业素材，这是某网站在一段时间内的统计指标，每三行为一个单位，分别是时间，ip，pv 将数据读入R，然后使用qplot函数用适当而美观的方式展现时间序列变化趋势。 1、加载 ggplot2包,准备数据

# install.packages('ggplot2',dependencies=T);
library(ggplot2)
x = scan("lesson8.txt", sep = "\n", what = list("", "", ""))
data = data.frame(date = as.character(c(x[1], recursive = TRUE)), ip = as.numeric(c(x[2], 
    recursive = TRUE)), pv = as.numeric(c(x[3], recursive = TRUE)))
Sys.setlocale("LC_TIME", "C")

## [1] "C"

绘图:

qplot(as.Date(strptime(as.character(data$date), "%a %b %d")), pv, data = data, 
    geom = "line", main = "qplot line", xlab = "Date", ylab = "pv")