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调查结果 单独的参考数据框架中两个点之间的数据框架数值
原标题:Finding R data frame values between two points in a separate reference data frame
  • 时间:2023-08-13 02:12:05
  •  标签:
  • r

在R中有2个数据组:

df:

Category Min Max ID
First 1 3 A
First 4 6 B
First 7 9 C
Second 100 300 D
Second 400 600 E
Second 700 900 F

DF2:

Name First Second
Alpha 5 200
Beta 8 500

我试图将每个类别的DF2栏数值与各自在DF1中的最小/最高数值进行比较,以建立一个新的数据框架,使其数值从df1中取而代之(见下文):

希望产出:

Name First Second
Alpha B D
Beta C E

我一直在尝试不同的功能,但由于数据框架结构不同,数据表是数据表,而数据基是参考表一m。 我认为,我可能需要结合功能和封套,不过,希望更容易。 感谢任何想法和援助。

问题回答

请尝试以下法典

library(tidyverse)

df2 %>% pivot_longer(-Name) %>% left_join(df1, join_by(name==Category)) %>% 
  filter(between(value,Min,Max)) %>% 
  pivot_wider(Name, names_from = name, values_from = ID)

Created on 2023-08-12 with reprex v2.0.2

# A tibble: 2 × 3
  Name  First Second
  <chr> <chr> <chr> 
1 Alpha B     D     
2 Beta  C     E     




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