R中的3维数组名称 [英] 3 Dimensional Array Names in R

问题描述

在3维数组下面:

ar <- array(someData, c(5, 5, 5));  
rownames(ar) <- ...;  #to set up row names
colnames(ar) <- ...;  #to set up col names

如何设置三维尺寸名称?

How can i set the third dimension names ?

推荐答案

您可以在定义数组时设置dimnames参数:

You can either set the dimnames argument when defining the array:

ar <- array(data     = 1:27,
            dim      = c(3, 3, 3),
            dimnames = list(c("a", "b", "c"),
                            c("d", "e", "f"),
                            c("g", "h", "i")))

和/或您可以像这样设置第三维的dimnames:

and/or you can set the dimnames of the third dimension like so:

dimnames(ar)[[3]] <- c("G", "H", "I")

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