Use the R language to name the rows and columns of a matrix (table)

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The process of matrix (tabular) data is often used in R languages, and it is particularly important to define a name for its ranks in the complex data. Batch naming is a good way to handle huge amounts of data, and here are some concrete examples of how to name the columns of matrices in the R language in batches.

>	x <-Matrix (1:12,nrow=3,byrow=t)	Initializes a matrix that fills in the order of the preceding columns
>	X	View Matrix x
	[, 1] [, 2] [, 3] [, 4] [1,] 1 2 3 4 [2,] 5 6 7 8 [3,] 9 10 11 12
>	Rownames (x) <-Letters[1:3]	Use the first three uppercase letters to name the lines in turn
>	X	View Matrix x
	[, 1] [, 2] [, 3] [, 4] A 1 2 3 4 B 5 6 7 8 C 9 10 11 12
>	Colnames (x) <-C ("X", "Y", "Doc", "Bear")	Use vectors with equal capacity and number of columns to name each column
>	X	View Matrix x
	X Y Doc Bear A 1 2 3 4 B 5 6 7 8 C 9 10 11 12
>	M0 <-Matrix (NA, 4, 0)	Initializes a matrix containing 4 rows with no padding for the cells
>	M0	View the M0
	[1,] [2,] [3,] [4,]
>	Rownames (M0) Null	Query row name
>	M2 <-cbind (1,1:4)	Initial data frame, each column is filled with different rules
>	M2	View m2
	[, 1] [, 2] [1,] 1 1 [2,] 1 2 [3,] 1 3 [4,] 1 4
>	Colnames (M2, do. NULL = FALSE)	Returns the system default column name
	[1] "col1" "col2"
	Colnames (m2) <-C ("X", "Y")	Use vectors to name columns
>	M2	View m2
	X Y [1,] 1 1 [2,] 1 2 [3,] 1 3 [4,] 1 4
>	Rownames (m2) <-rownames (M2, do. NULL = FALSE, prefix = "bear.")	Name each row using the prefix increment method
>	M2	View m2
	X Y Bear.1 1 1 Bear.2 1 2 BEAR.3 1 3 BEAR.4 1 4
>	Nam=colnames (m2)	Create a column name vector by assigning a column name to the vector Nam

Use the R language to name the rows and columns of a matrix (table)