date_feats: One Hot Encoding for Date/Time Variables (Dummy Variables)

In lares: Analytics & Machine Learning Sidekick

One Hot Encoding for Date/Time Variables (Dummy Variables)

Description

This function lets the user automatically create new columns out of a dataframe or vector with date/time variables.

Usage

date_feats(
  dates,
  drop = FALSE,
  only = NA,
  append = FALSE,
  holidays = FALSE,
  country = "Venezuela",
  currency_pair = NA,
  quiet = FALSE
)

Arguments

dates	Vector or dataframe. Non-date/time columns will be automatically ignored/extracted.
drop	Boolean. Should the original date/time columns be kept in the results? Only valid when input is a dataframe.
only	Character or vector. Which columns do you wish to process? If non are explicitly defined, all will be processed
append	Boolean. Append results to existing data.frame? If FALSE, only calculated values will be returned.
holidays	Boolean. Include holidays as new columns?
country	Character or vector. For which countries should the holidays be included?
currency_pair	Character. Which currency exchange do you wish to get the history from? i.e, USD/COP, EUR/USD...
quiet	Boolean. Quiet all messages?

Value

data.frame with additional features calculated out of time or date vectors.

See Also

Other Data Wrangling: balance_data(), categ_reducer(), cleanText(), date_cuts(), file_name(), formatHTML(), holidays(), impute(), left(), normalize(), num_abbr(), ohe_commas(), ohse(), quants(), removenacols(), replaceall(), replacefactor(), textFeats(), textTokenizer(), vector2text(), year_month(), zerovar()

Other Feature Engineering: holidays(), ohse()

Other One Hot Encoding: holidays(), ohe_commas(), ohse()

Examples

df <- data.frame(
  dates = sample(seq(Sys.Date() - 365, Sys.Date(), by = 1), 50),
  times = sample(seq(Sys.time() - 1e7, Sys.time(), by = 1), 50)
)

# Input as a vector or dataframe
date_feats(df, drop = TRUE) %>% head(10)

# Holidays given a date range and country
## Not run: 
hol <- date_feats(
  seq(Sys.Date() - 365, Sys.Date(), by = 1),
  holidays = TRUE,
  country = "Venezuela"
)
head(hol[!is.na(hol$holiday_name), ])

## End(Not run)

lares documentation built on Sept. 13, 2024, 1:08 a.m.