Example of R drawing using Linux

Read the data from City1.csv, City2.csv, City3.csv, City4.csv, and draw a line chart.

CSV Data 1

A b

Figure 1

The code is as follows:

#读取csv数据

Data1=read.csv ("City1.csv")

Data2=read.csv ("City2.csv")

Data3=read.csv ("City3.csv")

Data4=read.csv ("City4.csv")

#给图片命名

PNG (file= "city1.jpg")

#绘制第一幅图

Plot (data1$runningtime~data1$length,type= "O", Pch=1,ylim=c (0,5), main= "test", xlab= "Length", ylab= "Running Time", Col= "Blue")

#分别添加图

Lines (data2$runningtime~data2$length,type= "O", pch=2,col= "Red")

Lines (data3$runningtime~data3$length,type= "O", pch=4,col= "green")

Lines (data4$runningtime~data4$length,type= "O", pch=16,col= "Black")

#制作图例

Legend ("TopRight", C ("First", "second", "third", "forth"), bty= ' n ', Pch=c (1,2,4,16), Lty=1,col=c (' Blue ', ' red ', ' green ') , ' black '))

#保存

Dev.off ()

Results:

Example 2 :

Read the data from the City.csv and draw a bar chart.

CSV Data 2

Figure 2

Code:

#读取csv数据

Data1=read.csv ("City.csv")

M = As.matrix (Data1[,2:5])

PNG (file= "city.jpg")

#画图

Barplot (M,col=rainbow (4), Ylim=c (0,100), beside=true,legend.text=data1$name,args.legend=list (bty= "n", Horiz=TRUE) )

Dev.off ()

Results:

Example of R drawing using Linux