小编ely*_*raz的帖子

我有一个从互联网上传的形状.根据计算出的质心,我想从它绘制一条50度线,并找到与轮廓相交的坐标.不知道怎么办呢？

谢谢.

脚本:

library(ggplot2)

df = read.table("E:/cloud1.txt")  #stored at https://ufile.io/zq679
colnames(df)<- c("x","y")

meanX <- mean(df$x)
meanY <- mean(df$y)

ggplot(df, aes(x, y))+ geom_point()+ geom_point(aes(meanX, meanY),colour="green",size=2)