R：矩陣中的誤差（0，nrow = N，ncol = n.seq）：非數字矩陣范圍

Question

library(RMallow)
> dput(rankings)
structure(list(MEMORY1 = c(5.5, 7, 1.5, 6, 4.5, 4.5, 5, 4, 1, 
5.5, 2.5, 4.5, 2.5, 5.5, 4, 1, 4, 5, 2.5, 5.5), MEMORY2 = c(5.5, 
3, 1.5, 6, 4.5, 4.5, 5, 4, 5, 5.5, 6.5, 4.5, 2.5, 5.5, 4, 7, 
8, 5, 6.5, 5.5), MEMORY3 = c(5.5, 3, 4.5, 2, 4.5, 4.5, 5, 4, 
5, 1.5, 6.5, 4.5, 6.5, 5.5, 4, 7, 4, 5, 6.5, 5.5), MEMORY4 = c(1.5, 
3, 4.5, 2, 1, 4.5, 5, 4, 5, 5.5, 2.5, 4.5, 2.5, 1.5, 4, 2, 4, 
5, 2.5, 1.5), MEMORY5 = c(5.5, 3, 4.5, 6, 4.5, 4.5, 5, 1, 5, 
5.5, 6.5, 4.5, 6.5, 5.5, 4, 4, 4, 5, 2.5, 1.5), MEMORY6 = c(5.5, 
7, 7.5, 6, 8, 4.5, 5, 7.5, 5, 5.5, 6.5, 4.5, 6.5, 5.5, 4, 4, 
4, 5, 2.5, 5.5), MEMORY7 = c(1.5, 3, 4.5, 2, 4.5, 4.5, 1, 4, 
5, 1.5, 2.5, 4.5, 6.5, 1.5, 4, 7, 4, 1, 6.5, 5.5), MEMORY8 = c(5.5, 
7, 7.5, 6, 4.5, 4.5, 5, 7.5, 5, 5.5, 2.5, 4.5, 2.5, 5.5, 8, 4, 
4, 5, 6.5, 5.5)), .Names = c("MEMORY1", "MEMORY2", "MEMORY3", 
"MEMORY4", "MEMORY5", "MEMORY6", "MEMORY7", "MEMORY8"), row.names = c(NA, 
20L), class = "data.frame")

abils = ncol(rankings)
R = Rgen(2, hyp = NULL, abils)
AllKendall(ranking, R)

當我運行上面的代碼時，我得到一個錯誤，指出Error in matrix(0, nrow = N, ncol = n.seq) : non-numeric matrix extent 。 我讀了其他一些相關的帖子，看來問題是nrow = N不是數字。 是什么原因導致這種情況發生，我該如何解決？

Answer 1

如果你看一下在實例?AllKendall看來你的“設置序列”應該是一個矩陣（看他們如何有排名的名單，然后他們rbind在一起？）

為此，請嘗試

AllKendall(do.call(rbind, R), do.call(rbind, rankings))
# for some reason if you put it the other way round there is an error

其結果是一個矩陣，使得output[i, j]是從序列的距離i在R從序列j在rankings 。