Question

我必须为包含特定单词的句子分配一个ID。

下面是R数据帧，其中包含每个位置的ID。我需要扫描：

Place       ID
Ladakh      12
Mumbai      14
Bangalore   17

我还有另一个包含以下句子的数据框：

说明

Vinod is coming to Ladakh
Rahul is coming to Mumbai

例如，我需要以下输出（基本上，列Place应该从Description列中提取信息）：

Description                 Place   ID
Vinod is coming to Ladakh   Ladakh  12
Rahul is coming to Mumbai   Mumbai  14

任何对此的帮助将不胜感激。谢谢

Answer 1

df1 = read.table(text = "
Place      ID
Ladakh     12
Mumbai     14
Bangalore  17
", header=T, stringsAsFactors=F)

df2 = data.frame(Description = c("Vinod is coming to Ladakh",
                                 "Rahul is coming to Mumbai"),
                 stringsAsFactors = F)

library(tidyverse)

df2 %>%
  mutate(Place = Description) %>%
  separate_rows(Place) %>%
  inner_join(df1, by="Place")

#                 Description  Place ID
# 1 Vinod is coming to Ladakh Ladakh 12
# 2 Rahul is coming to Mumbai Mumbai 14

将数字分配给类别

1 个答案: