#0178

Parse a Date Column in R

EasyR15 min10 XP

Problem

Given a data frame with date_text in YYYY-MM-DD format, add a date column using as.Date.

Date columns must be real dates before sorting, filtering windows, or plotting time series.

Example 1

Inputdate_text values 2026-01-01 and 2026-01-10

Outputdate column contains Date values

as.Date turns ISO strings into proper date objects.

CodeR

df <- data.frame(date_text = c("2026-01-01", "2026-01-10"))

# write your code here

df <- data.frame(date_text = c("2026-01-01", "2026-01-10"))

# write your code here

Visible browser tests run here when available.

Testcases1 visible / 3 hidden categories

Core example

Inputdate_text values 2026-01-01 and 2026-01-10

Expecteddate column contains Date values

as.Date turns ISO strings into proper date objects.

Hidden Test Categories

empty or minimal inputduplicates or tieslarger input