EpiForsk (version 0.2.0)

many_merge: Merging Many Data Frames with Name Handling

Description

Function to join/merge multiple data.frames with one or more common variable names.

Usage

many_merge(by, first_data, ...)

Value

The many_merge() function returns a data frame.

Arguments

by

A join specification created with join_by(), or a character vector of variables to join by. The by must be present in all data frames first_data and ....

first_data

A data frame (presented on the left in the final table).

...

Data frames to merge onto first_data.

Author

ASO

Examples

# Create some dummy data
testdata_id <- c(1:10)
var1 <- rep(letters[1:5], times = 2)
var2 <- letters[1:10]
var3 <- rep(letters[11:12], times = 5)
var4 <- letters[13:22]
var5 <- letters[11:20]

# Rename alle the variables to "var"
data1 <- data.frame(testdata_id, var = var1)
data2 <- data.frame(testdata_id, var = var2)
data3 <- data.frame(testdata_id, var = var3)
data4 <- data.frame(testdata_id, var = var4)
data5 <- data.frame(testdata_id, var = var5)

# Many merge
final_data <- many_merge(
  by = c("testdata_id"),
  data1,
  data2,
  data3,
  data4,
  data5
)