如何在R中生成bin频率表？

Question

对于以下示例,如何将大小为0.1的数据合并.

x<-c(0.01,0.34,0.45,0.67,0.89,0.12,0.34,0.45,0.23,0.45,0.34,0.32,0.45,0.21,0.55,0.66,0.99,0.23,.012,0.34)
range        frequency
0.1-0.2       a
0.2-0.3       b
0.3-0.4       c
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问候

Answer 1

关于@akrun解决方案,我会在文档中发布一些有用的内容?cut,以防万一:

注意

取而代之的 table(cut(x, br)),hist(x, br, plot = FALSE) 是更有效和更少的内存饿了.

所以,如果有大量数据,我宁愿选择:

br = seq(0,1,by=0.1)

ranges = paste(head(br,-1), br[-1], sep=" - ")
freq   = hist(x, breaks=br, include.lowest=TRUE, plot=FALSE)

data.frame(range = ranges, frequency = freq$counts)

#       range frequency
#1    0 - 0.1         2
#2  0.1 - 0.2         1
#3  0.2 - 0.3         3
#4  0.3 - 0.4         5
#5  0.4 - 0.5         4
#6  0.5 - 0.6         1
#7  0.6 - 0.7         2
#8  0.7 - 0.8         0
#10   0.9 - 1         1

Answer 2

尝试

 as.data.frame(table(cut(x, breaks=seq(0,1, by=0.1))))