R-ggplot2

#下載R與Rstudio

https://www.rstudio.com/products/rstudio/download/

http://cran.csie.ntu.edu.tw/

#參考網頁

https://ithelp.ithome.com.tw/users/20103434/ironman/1056?page=1

https://sites.google.com/site/rlearningsite/home

#安裝ggplot2

install.packages("ggplot2")

library(ggplot2)

#定義資料

df = 檔案名稱

#繪製點狀圖

qplot(diamonds$carat, diamonds$price)

qplot(m$math, m$english)

#相關及圖示

ggplot(df, aes(x = english, y = math)) + geom_point()

# 依據不同間斷變項區別顏色

ggplot(df, aes(x = english, y = math)) + geom_point(aes(color = aid))

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#著色

qplot(carat, price, data = diamonds.subset, color = color)

#形狀分布

qplot(carat, price, data = diamonds.subset, shape = cut)

#箱型圖

qplot(color, price / carat, data = diamonds, geom = "boxplot")

#直方圖

qplot(carat, data = diamonds, geom = "histogram")

#調整寬度

qplot(carat, data = diamonds, geom = "histogram",

binwidth = 0.5, xlim = c(0, 3))

#長條圖

qplot(color, data = diamonds, geom = "bar")

#時間序列

qplot(date, unemploy / pop, data = economics, geom = "line")