r中如何进行模糊匹配？

由逢水之发布于 2020-05-24 04:37:59

我有一些如下数据

plot    Tsoil_11 Tsoil_12 Tsoil_13 Tsoil_21 Tsoil_22  SWC_11   SWC_12  SWC_13  SWC_21  SWC_22 
11       1        2         3       4         5       6       7       8       9       10
11b      11       12        13      14       15       16       17      18     19       20
11c      21       22        23      24       25       26       27      28     29       30
12        31      32        33      34       35        36      37      38     39       40
13        41       42        43      44       45        46       47      48     49       50
21        51       52        53      54       55        56       57      58     59       60
21b       61       62        63      64       65        66       67      68     69       70
22        71       72        73      74       75        76       77      78     79       80
...

我想添加Tsoil和SWC的两列。理想的数据应如下所示，

plot      Tsoil  SWC
11          1     6
11b        11    16
11c        21    26
12         32    12
13         43    48
21         54    59
21b        64    69
22         75    80
...

如何在R中实现？

对不起

2020-05-24 04:37:59

We can use pivot_longer and specify the names_sep as _, then filter values based on the 'ind' column comparison (suffix of column names) with the number only values from 'plot'

library(dplyr)
library(tidyr)
library(stringr)
df1 %>%
  pivot_longer(cols = -plot, names_to = c( '.value', 'ind'), names_sep="_") %>%
  filter(str_remove(plot, "\\D+") == ind) %>%  
  #or use str_detect`
  filter(str_detect(plot, ind)) %>%
  select(-ind)  
# A tibble: 8 x 3
# plot  Tsoil   SWC
#  <chr> <dbl> <dbl>
#1 11        1     6
#2 11b      11    16
#3 11c      21    26
#4 12       32    37
#5 13       43    48
#6 21       54    59
#7 21b      64    69
#8 22       75    80

数据

df1 <- structure(list(plot = c("11", "11b", "11c", "12", "13", "21", 
"21b", "22"), Tsoil_11 = c(1L, 11L, 21L, 31L, 41L, 51L, 61L, 
71L), Tsoil_12 = c(2L, 12L, 22L, 32L, 42L, 52L, 62L, 72L), Tsoil_13 = c(3L, 
13L, 23L, 33L, 43L, 53L, 63L, 73L), Tsoil_21 = c(4L, 14L, 24L, 
34L, 44L, 54L, 64L, 74L), Tsoil_22 = c(5L, 15L, 25L, 35L, 45L, 
55L, 65L, 75L), SWC_11 = c(6L, 16L, 26L, 36L, 46L, 56L, 66L, 
76L), SWC_12 = c(7L, 17L, 27L, 37L, 47L, 57L, 67L, 77L), SWC_13 = c(8L, 
18L, 28L, 38L, 48L, 58L, 68L, 78L), SWC_21 = c(9L, 19L, 29L, 
39L, 49L, 59L, 69L, 79L), SWC_22 = c(10L, 20L, 30L, 40L, 50L, 
60L, 70L, 80L)), class = "data.frame", row.names = c(NA, -8L))

逢水之

这家伙很懒，什么都没留下

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