在此链接中修改MagicPie
它是第三个与student_ID=c("1001","1002","1005","1010")
Year=c("2011","2012","2015","2015")
Sem=c("1","2","1","2")
Grade=c("Pass","Fail","Pass","Fail")
record2<-data.table(student_ID,Year,Sem,Grade)
一起使用的库。
更改绘制Pies的Core Animation
中属性“startAngle
”的属性“endAngle
”和“PieLayer
”。
UIView
参考链接here