Test Whether Data Frame Column has Date Class in R (Example Code)

This tutorial demonstrates how to test whether a variable has the Date data type in the R programming language.

Exemplifying Data

my_df <- data.frame(var1 = as.Date(c("2021-11-10",  # Example data
                                     "2023-03-17",
                                     "2025-03-29",
                                     "2026-10-07")),
                    var2 = 11:14,
                    var3 = as.Date(c("2023-10-15",
                                     "2022-06-16",
                                     "2024-03-29",
                                     "2032-11-17")),
                    var4 = c("2023-11-12",
                             "2024-01-27",
                             "2024-11-11",
                             "2023-10-03"),
                    var5 = letters[1:4])
my_df
#         var1 var2       var3       var4 var5
# 1 2021-11-10   11 2023-10-15 2023-11-12    a
# 2 2023-03-17   12 2022-06-16 2024-01-27    b
# 3 2025-03-29   13 2024-03-29 2024-11-11    c
# 4 2026-10-07   14 2032-11-17 2023-10-03    d

Example: Identify Date Class in Data Frame Columns

sapply(my_df, is.Date)                              # Check for Date class
 # var1  var2  var3  var4  var5 
 # TRUE FALSE  TRUE FALSE FALSE

Test Whether Data Frame Column has Date Class in R (Example Code)

Exemplifying Data

Example: Identify Date Class in Data Frame Columns

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