0
我是R中的初学者,我在K均值聚类上跟随this tutorial。但是,我试图在真实数据上运行此算法。我选择:http://exoplanet.eu/catalog/R中的K均值聚类
我已经加载的数据:
d <- read.csv2(
"exoplanet.eu_catalog.csv",
header = TRUE,
sep = ","
)
有了这个代码:
plot(
x = log(as.numeric(as.character(d$semi_major_axis))),
y = log(as.numeric(as.character(d$mass))),
xlab = "Star-exoplanet distance (log(UA))",
ylab = "Mass of exoplanets (log(M[Jupiter]))"
)
我有以下图文:
我想在这个gra上运行K-means聚类算法形性,以显示三组颜色,但我不知道如何着手R.我想我得首先:
y = log(as.numeric(as.character(d$mass)))
y <- y[!is.na(y)]
x = log(as.numeric(as.character(d$semi_major_axis)))
x <- x[!is.na(x)]
但我不知道如何将数据格式化成一个矩阵,以运行kmeans(matrix, 3, nstart = 20)
。有任何线索吗?