ggplot(mydata,aes(Company,Sale,group=Year,fill=Year))+geom_line()
?...通过指定group即告知软件将变量按照年份变量分组,否则单个不重复记录都会被当做一个单独分组。...ggplot(newdata,aes(Company,Sale,group=Year))+geom_line()+geom_point()
ggplot(newdata,aes(Company,Sale...每一个类型示例如下:
ggplot(newdata,aes(Company,Sale,group=Year,colour=Year))+geom_line()+geom_point()
ggplot(...ggplot(newdata,aes(Company,Sale,group=Year,colour=Year))+geom_line(size=5,linetype=1)+geom_point()
ggplot