In fmsan51/jlubridate: Enhance 'lubridate' to Parse Japanese 'Gengo'

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  fig.path = "man/figures/README-",
  out.width = "100%"
)
Sys.setlocale("LC_CTYPE", "Japanese")

jlubridate

jlublidate provides wrappers of ymd() series from lubridate package to parse Japanese gengo (元号) (or nengo (年号)).

Installation

You can install jlubridate from GitHub with:

# install.packages("devtools")
devtools::install_github("fmsan51/jlubridate")

Example

jymd(): recognize date written in 元号 and convert it to POSIXct class object in 西暦.

library(jlubridate)

jymd("昭和元年十二月二十五日", "平１０．３．２８", "R 4-3-1", "二〇一九年八月七日")  # 元号 dates can be mixed with 西暦 dates.

元号 of 明治, 大正, 昭和, 平成, and 令和 can be recognized.
Formats which can be recognized are follows: 令和, 令, R, r, Reiwa, reiwa, REIWA.
jymd(), jymd_h(), jymd_hm(), and jymd_hms() correspond to ymd(), ymd_h(), ymd_hm() and ymd_hms() respectively.

Extras

gengo2seireki(): convert 元号 dates to 西暦 dates.

gengo2seireki("明治一二年三月四日")

kansuji2roman(): convert numbers written in Chinese characters (漢数字) to Roman numbers. Applicable only for integers from 0 to 9999.

kansuji2roman("千二百三十四")

fmsan51/jlubridate documentation built on Nov. 4, 2019, 12:45 p.m.