R 将矩阵作为表格写入csv文件
我有一个矩阵,它看起来像印刷品:R 将矩阵作为表格写入csv文件,r,R,我有一个矩阵,它看起来像印刷品: [,1] [1,] Character,17 [2,] Character,17 [3,] Character,17 [4,] Character,17 [5,] Character,17 [6,] Character,17 [7,] Character,17 我想把它写入csv文件 write.table(mat, file = "...", ..) 它这样写矩阵: c("1", "2", "3") c("1", "1", "2")
[,1]
[1,] Character,17
[2,] Character,17
[3,] Character,17
[4,] Character,17
[5,] Character,17
[6,] Character,17
[7,] Character,17
我想把它写入csv文件
write.table(mat, file = "...", ..)
它这样写矩阵:
c("1", "2", "3")
c("1", "1", "2")
也许我应该改变矩阵中不是字符的数据
我该怎么做
谢谢
我想写的数据不是向量。应该是:
"1", "2", "3"
"1", "1", "2"
当
向量
的列表
通过包装矩阵
直接转换为矩阵
时,可能会发生这种情况。返回一个矩阵
,每个元素都有一个列表
。e、 g
set.seed(24)
lst1 <- lapply(1:7, function(x) sample(letters[1:10], 17, replace = TRUE))
相反,它可以在包装到matrix
mat <- matrix(lst1)
str(mat)
#List of 7
# $ : chr [1:17] "g" "c" "h" "g" ...
# $ : chr [1:17] "h" "a" "e" "e" ...
# $ : chr [1:17] "c" "a" "c" "h" ...
# $ : chr [1:17] "e" "j" "i" "a" ...
# $ : chr [1:17] "d" "j" "g" "h" ...
# $ : chr [1:17] "b" "b" "a" "h" ...
# $ : chr [1:17] "e" "c" "c" "d" ...
# - attr(*, "dim")= int [1:2] 7 1
mat
# [,1]
#[1,] Character,17
#[2,] Character,17
#[3,] Character,17
#[4,] Character,17
#[5,] Character,17
#[6,] Character,17
#[7,] Character,17
mat2 <- simplify2array(lst1)
#or # mat2 <- do.call(cbind, lst1)
mat2
# [,1] [,2] [,3] [,4] [,5] [,6] [,7]
# [1,] "g" "h" "c" "e" "d" "b" "e"
# [2,] "c" "a" "a" "j" "j" "b" "c"
# [3,] "h" "e" "c" "i" "g" "a" "c"
# [4,] "g" "e" "h" "a" "h" "h" "d"
# [5,] "b" "e" "f" "a" "c" "g" "b"
# [6,] "c" "h" "g" "a" "g" "d" "b"
# [7,] "j" "b" "a" "d" "j" "e" "h"
# [8,] "h" "a" "f" "g" "j" "b" "h"
# [9,] "f" "e" "g" "c" "j" "b" "g"
#[10,] "j" "b" "a" "e" "c" "b" "i"
#[11,] "i" "a" "b" "g" "h" "i" "e"
#[12,] "d" "e" "d" "e" "h" "f" "e"
#[13,] "i" "d" "c" "g" "e" "d" "g"
#[14,] "h" "j" "f" "j" "j" "e" "f"
#[15,] "g" "f" "c" "h" "c" "i" "j"
#[16,] "h" "f" "d" "j" "c" "i" "i"
#[17,] "a" "j" "f" "d" "a" "c" "a"
或
现在,使用'mat2'上的
write.table
,应该会给出预期的输出数据。table的fwrite
可以直接处理这个问题,因为它可以处理列表
列,尽管它看起来有点奇怪:
library(data.table)
mat = structure(lapply(1:7, function(i) letters[1:17]), dim = c(7, 1))
# need to set sep to something besides ,
fwrite(mat, sep2 = c('', ',', ''), sep = '\t')
# V1
# a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q
# a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q
# a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q
# a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q
# a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q
# a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q
# a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q
使用转置
来“翻转”底层的列表
,会更漂亮:
fwrite(transpose(mat))
它看起来像matrrix的
列表。你需要unlist
到单个数据。frame你能在你的问题中包括dput(mat[1:3,])
library(data.table)
mat = structure(lapply(1:7, function(i) letters[1:17]), dim = c(7, 1))
# need to set sep to something besides ,
fwrite(mat, sep2 = c('', ',', ''), sep = '\t')
# V1
# a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q
# a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q
# a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q
# a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q
# a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q
# a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q
# a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q
fwrite(transpose(mat))