文档术语矩阵的频率分布图

Question

我创建了一个看起来像这样的文档术语矩阵：

inspect(dtm[1:4,1:6])

              allowed allowing almost alone companyunder companywide 
Doc1.txt         1      1         1     0       1             0
Doc2.txt         0      1         1     0       1             1
Doc3.txt         0      0         0     1       0             1
Doc4.txt         1      0         1     0       1             1

在获取它的列总和后，它给了我。

colSums(dtm)

 allowed          2
 allowing         2 
 almost           3
 alone            1
 companyunder     3
 companywide      3

这实质上表明这些词在多少个文档中找到（例如 allowed 2 告诉我在两个文档中找到了 allowed 。）。

我在创建频率分布图时遇到困难，该图将 x 轴作为文档编号，y 轴作为文档包含的单词数。

Answer 1

这是你要找的吗？

dtm = array(c(1,0,0,1,1,1,0,0,1,1,0,1,0,0,1,0,1,1,0,1,0,1,1,1),dim=c(4,6))
dimnames(dtm) = list(c("Doc1","Doc2","Doc3","Doc4"),c("allowed","allowing","almost","alone","companyunder","companywide"))
print(dtm)
plot(rowSums(dtm))