{"author_name":"ryamada","url":"https://ryamada.hatenadiary.jp/entry/20150927/1443320860","blog_title":"ryamada\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fb\u6570\u5b66\u30e1\u30e2","categories":["\u5916\u63a5\u5186","\u5916\u63a5\u4e2d\u5fc3","circumcenter","python","R","DEC"],"provider_url":"https://hatena.blog","published":"2015-09-27 11:27:40","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fryamada.hatenadiary.jp%2Fentry%2F20150927%2F1443320860\" title=\"\u5916\u63a5\u4e2d\u5fc3 - ryamada\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fb\u6570\u5b66\u30e1\u30e2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","title":"\u5916\u63a5\u4e2d\u5fc3","type":"rich","version":"1.0","blog_url":"https://ryamada.hatenadiary.jp/","author_url":"https://blog.hatena.ne.jp/ryamada/","provider_name":"Hatena Blog","height":"190","image_url":null,"description":"\u3053\u3061\u3089\u306b\u3082\u66f8\u3044\u305f\u901a\u308a\u3001\u4e09\u89d2\u5316\u3057\u305f\u5f8c\u3001\u305d\u306e\u5916\u63a5\u4e2d\u5fc3\u3092\u53d6\u308b\u3053\u3068\u306f\u4fbf\u5229 \u5916\u63a5\u4e2d\u5fc3\u3092\u3055\u3089\u3063\u3068\u7dda\u5f62\u4ee3\u6570\u51e6\u7406\u3067\u51fa\u3059\u306b\u306f\u3001\u3053\u3061\u3089\u306epydec\u306e\u305d\u308c\u304c\u3088\u3044 Barycentric coordinate\u3067\u51fa\u3057\u3066\u305d\u306e\u3042\u3068\u901a\u5e38\u5ea7\u6a19\u306b\u3059\u308c\u3070\u3088\u3044 \u305d\u308c\u3092R\u3067\u66f8\u304d\u63db\u3048\u308b\u3068\uff1a my.circ.center.bary <- function(pts){ d <- length(pts[1,]) n.pt <- length(pts[,1]) A <- 2* pts %*% t(pts) A <- cbind(A,rep(1,n.pt)) A <- rbind(A,c(rep(1,n.pt),0)) b <- c(apply(\u2026"}