这是我第一次从 PDF 文档抓取文本。我正在展示我认为对我正在做的事情最有用的数据格式,但我可能是错的。清理完 PDF 文本后,我将其格式化为 tibble
(如下)。
我尝试利用 strsplit(dmt,\\s+)
将字符串拆分为三个单独的列,但这只是将所有内容完全分开。我使用 str_squish()
来消除字符串中间文本部分的空格,但这对模式匹配没有帮助。
字符串的第一个数字部分有时以 )
或 数字
结尾。这是我正在处理的内容:
dmt
# A tibble: 612 x 1
datamatrixtest[,1]
<chr>
1 110.05 Human Service Vehicle Inspection Reqd 6
2 23.33(12)(b) ATV-Fail/Stop for Law Enforce. Official 1
3 23.33(6)(a) ATV-Fail/Display Lighted Headlamp 1
4 341.03 Oper Veh After Sus/Rev or Can of Reg 8,862
5 341.04(1) Non-Registration of Vehicle 10,125
6 341.04(2) Improper Registration of Vehicle 4
7 341.15(1) Fail/Display Vehicle License Plates 2,010
8 341.15(1m)(a) Fail/Attach Rear Regis. Decal/Tag 3
9 341.15(1m)(b) Fail/Attach Front Regis. Decal/Tag 2
10 341.15(2) Improperly Attached License Plates 7
# ... with 602 more rows
理想情况下,我可以利用 strsplit
进行精确的模式匹配,将数据放入三个单独的列中。
dmt
# A tibble: 612 x 3
statute offense cases
<chr> <chr> <num>
1 110.05 Human Service Vehicle Inspection Reqd 6
2 23.33(12)(b) ATV-Fail/Stop for Law Enforce. Official 1
3 23.33(6)(a) ATV-Fail/Display Lighted Headlamp 1
4 341.03 Oper Veh After Sus/Rev or Can of Reg 8,862
5 341.04(1) Non-Registration of Vehicle 10,125
6 341.04(2) Improper Registration of Vehicle 4
7 341.15(1) Fail/Display Vehicle License Plates 2,010
8 341.15(1m)(a) Fail/Attach Rear Regis. Decal/Tag 3
9 341.15(1m)(b) Fail/Attach Front Regis. Decal/Tag 2
10 341.15(2) Improperly Attached License Plates 7
最佳答案
我假设您的数据基本上如所呈现的那样,列之间有多个空格。换句话说,检查您的 dmt
是否与我在下面创建的那个相当。在这种情况下,我们可以像这样使用 \\s{2,}
将多个空格的任何部分上的每一行分开。如果您的数据不是这样,或者任何单个字段恰好包含多个空格,则使用 dput 和 head 提供示例,以便我们找到更精确的模式那会起作用的。
library(tidyverse)
dmt <- read_lines(
"110.05 Human Service Vehicle Inspection Reqd 6
23.33(12)(b) ATV-Fail/Stop for Law Enforce. Official 1
23.33(6)(a) ATV-Fail/Display Lighted Headlamp 1
341.03 Oper Veh After Sus/Rev or Can of Reg 8,862
341.04(1) Non-Registration of Vehicle 10,125
341.04(2) Improper Registration of Vehicle 4
341.15(1) Fail/Display Vehicle License Plates 2,010
341.15(1m)(a) Fail/Attach Rear Regis. Decal/Tag 3
341.15(1m)(b) Fail/Attach Front Regis. Decal/Tag 2
1341.15(2) Improperly Attached License Plates 7"
) %>%
enframe(name = NULL, value = "line")
dmt %>%
separate(line, c("statute", "offense", "cases"), sep = "\\s{2,}") %>%
mutate(cases = cases %>% str_remove_all(",") %>% as.integer)
#> # A tibble: 10 x 3
#> statute offense cases
#> <chr> <chr> <int>
#> 1 110.05 Human Service Vehicle Inspection Reqd 6
#> 2 23.33(12)(b) ATV-Fail/Stop for Law Enforce. Official 1
#> 3 23.33(6)(a) ATV-Fail/Display Lighted Headlamp 1
#> 4 341.03 Oper Veh After Sus/Rev or Can of Reg 8862
#> 5 341.04(1) Non-Registration of Vehicle 10125
#> 6 341.04(2) Improper Registration of Vehicle 4
#> 7 341.15(1) Fail/Display Vehicle License Plates 2010
#> 8 341.15(1m)(a) Fail/Attach Rear Regis. Decal/Tag 3
#> 9 341.15(1m)(b) Fail/Attach Front Regis. Decal/Tag 2
#> 10 1341.15(2) Improperly Attached License Plates 7
由reprex package于2019年9月23日创建(v0.3.0)
关于r - 使用 strsplit 模式匹配将字符串分散到多列中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/58070787/