R通过将列名匹配到字符串列表来对矩阵列重新排序 [英] R Reorder matrix columns by matching colnames to list of string

问题描述

对不起，如果这是非常基本的. 我有一个名称列表和一个以这些名称作为列名称的矩阵.但是，姓氏的顺序不同.

Sorry if this is very basic. I have a list of names and a matrix with those names as column names. However, the colnames are in a different order.

例如.名称列表:colname4 colname3 colname2 colname5 colname1 矩阵姓氏:colname1 colname2 colname3 colname4 colname5

Eg. List of names: colname4 colname3 colname2 colname5 colname1 Matrix Colnames: colname1 colname2 colname3 colname4 colname5

我试图按与名称列表顺序相同的顺序对矩阵列进行排序.

I am trying to order the matrix columns in the same order as list of names order.

我尝试了test <- match(colnames(matrix1), colnames(matrix2))，但没有成功.你知道其他办法吗?

I have tried test <- match(colnames(matrix1), colnames(matrix2)) but it didn't work. Do you know any alternative?

推荐答案

您只需使用向量来命名名称和[-运算符，如下所示:

You just have to use a vector for the names and the [-operator as follows:

col.order <- c("colname4","colname3","colname2","colname5","colname1")
M[,col.order]

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