如何为R中的连续向量创建容器?
要为连续向量创建 bin,我们可以使用 cut 函数并将 bin 与原始向量一起存储在数据框中。cut 函数中的值必须根据向量值的范围进行传递,否则 bin 值中将出现 NA。例如,如果我们有一个包含 0.55 的向量并且我们不在 cut 函数中使用 0,那么第一个 bin 将是 NA。查看以下示例以了解如何正确执行此操作。
示例 1
x1<−rnorm(20,5,2)x1
输出结果
[1] 3.066708 6.729915 7.706962 7.564306 3.924779 5.400262 2.529380 4.377311[9] 7.270613 6.135201 5.068060 6.447229 8.603205 4.065874 4.132155 3.060366
[17] 0.953596 2.861802 7.250666 6.928397
示例
df1<−data.frame(x1,bin=cut(x1,c(0,1,2,3,4,5,6,7,8,9),include.lowest=TRUE))df1
输出结果
x1 bin1 3.066708 (3,4]
2 6.729915 (6,7]
3 7.706962 (7,8]
4 7.564306 (7,8]
5 3.924779 (3,4]
6 5.400262 (5,6]
7 2.529380 (2,3]
8 4.377311 (4,5]
9 7.270613 (7,8]
10 6.135201 (6,7]
11 5.068060 (5,6]
12 6.447229 (6,7]
13 8.603205 (8,9]
14 4.065874 (4,5]
15 4.132155 (4,5]
16 3.060366 (3,4]
17 0.953596 [0,1]
18 2.861802 (2,3]
19 7.250666 (7,8]
20 6.928397 (6,7]
例2
x2<−runif(20,2,5)x2
输出结果
[1] 2.656399 2.436808 3.704048 3.572767 2.321280 2.982751 4.911949 2.483126[9] 2.177203 2.797627 4.621546 3.645550 2.888457 2.919597 4.354709 4.251886
[17] 4.862071 3.367629 2.610280 3.063467
示例
df2<−data.frame(x1,bin=cut(x2,c(2,3,4,5),include.lowest=TRUE))df2
输出结果
x1 bin1 3.066708 [2,3]
2 6.729915 [2,3]
3 7.706962 (3,4]
4 7.564306 (3,4]
5 3.924779 [2,3]
6 5.400262 [2,3]
7 2.529380 (4,5]
8 4.377311 [2,3]
9 7.270613 [2,3]
10 6.135201 [2,3]
11 5.068060 (4,5]
12 6.447229 (3,4]
13 8.603205 [2,3]
14 4.065874 [2,3]
15 4.132155 (4,5]
16 3.060366 (4,5]
17 0.953596 (4,5]
18 2.861802 (3,4]
19 7.250666 [2,3]
20 6.928397 (3,4]
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