如何修复 R 中 ecdf 函数的运行时错误？

Question

当我运行这段代码-

a<- read.delim(file.choose("data.txt"))
d<-sort(a$d)
plot(d, sort(ecdf(d)(d)),type="s", lty=2,col="red", ylab= "P(X<=x)",ylim= 0:1)

这让我犯了这个错误-

Error in ecdf(d) : 'x' must have 1 or more non-missing values

帮助？

Answer 1

我运行你的代码，看起来没问题。我刚刚更改了您代码的第二行，因为您的数据中提供的唯一列被命名为 x，而不是 d。

查看：

# load data
a = structure(list(x = c(4L, 1L, 1L, 0L, 1L, 0L, 0L, 1L, 0L, 0L, 0L, 0L, 1L, 1L,
                         1L, 4L, 1L, 2L, 0L, 1L, 1L, 0L, 0L, 0L, 0L, 0L, 0L, 0L,
                         0L, 1L, 1L, 3L, 0L, 5L, 2L, 2L, 1L, 0L, 0L, 2L, 0L, 0L,
                         0L, 1L, 3L, 3L, 0L, 0L, 0L, 2L, 0L, 2L, 1L, 1L, 4L, 4L,
                         0L, 1L, 3L, 1L, 0L, 2L, 1L, 2L, 0L, 0L, 0L, 1L, 0L, 1L,
                         6L, 0L, 2L, 2L, 0L, 1L, 1L, 2L, 1L, 0L, 1L, 0L, 3L, 0L,
                         3L, 0L, 4L, 3L, 2L, 2L, 2L, 1L, 3L, 0L, 3L, 2L, 0L, 1L,
                         2L, 1L)), class = "data.frame", row.names = c(NA, -100L))
# sort x column (the only column)
d = sort(a$x)
# plot
plot(d, sort(ecdf(d)(d)), type = "s", lty = 2, col = "red",
     ylab = "P(X<=x)", ylim = 0:1)

输出：

如何修复 R 中 ecdf 函数的运行时错误？

How can I fix the runtime error in ecdf function in R?

statistics

r

ecdf