将行名赋予R中的表 [英] Give row names to table in R

问题描述

我有一个CSV文件，看起来像这样:

I have a CSV file which somewhat looks like this:

我需要对"NoOffaces"进行聚类，并计算有1个面，2个面等的数据集.

I need to cluster "NoOffaces" and count how many datasets has 1 face, 2 face and so on.

这是我在 R 中所做的事情:

Here is what I did in R:

data<-read.csv('test.csv')
a<-table(data$NoOffaces)
a  #for printing a

这是输出:

 0   1   2   3   4    5   6   7   8   9  10  14  15  19 
448 375 104  33  16   7   4   2   2   3   1   3   1   1 

但是，我想给前两行起个名字，以便看起来像这样

But, I want to give name to the first two rows so that it looks somewhat like this

 Faces :0   1   2    3   4    5   6   7   8   9  10  14  15  19 
 Count :448 375 104  33  16   7   4   2   2   3   1   3   1   1 

我无法命名行，还如何访问列中的每个值?

I am not able to name the rows, also how to access the each value in the column?

我是 R 的初学者，我们将为您提供一些帮助.

I am a beginner in R, some help will be appreciated.

谢谢:)

推荐答案

您可以基于表创建矩阵并为其分配行名.

You can create a matrix based on the table and assign row names to it.

# an example vector
x <- c(1:5, 1:3, 4:6)

a <- table(x)

mat <- rbind(as.numeric(names(a)), a)
rownames(mat) <- c("Faces", "Count")
mat
#       1 2 3 4 5 6
# Faces 1 2 3 4 5 6
# Count 2 2 2 2 2 1

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