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Function Date [DescTools v0.99.19]
keywords
chron
title
Create a Date From Numeric Representation
description
Create a date out of either year, month and day supplied by single values or out of one single numeric valu in the form yyyymmdd.
Function Date Functions [DescTools v0.99.19]
keywords
chron
title
Basic Date Functions
description
Some more date functions for making daily life a bit easier. The first ones extract a specific part of a given date, others check some conditions.
Function HmsToSec [DescTools v0.99.19]
keywords
chron
title
Convert h:m:s To/From Seconds
description
HmsToSec - Converts a vector of h:m:s to seconds. SecToHms - Converts a vector of seconds to h:m:s.
Function AddMonths [DescTools v0.99.19]
keywords
chron
title
Add a Month to a Date
description
Clueless adding numbers of months to a date will in some cases lead to invalid dates, think of e.g. 2012-01-30 + 1 month. AddMonths ensures that the result is always a valid date, e.g. as.Date("2013-01-31") + 1 month will be "2013-02-28". If number n is negative, the months will be subtracted.
Function XLDateToPOSIXct [DescTools v0.99.19]
keywords
chron
title
Convert Excel Dates to POSIXct
description
As I repeatedly forgot how to convert Excel dates to POSIX here's the specific function.
Function AddMonthsYM [DescTools v0.99.19]
keywords
chron
title
Add a Month to a Date
description
The format YYYYMM for dates can sometimes be convenient. Adding a number of months to such a date however is tedious, as the date structure should going to be preserved. Think of e.g. 201201 - 2 months, which would be expected to yield 201111. AddMonthsYM does this job.
Function Zodiac [DescTools v0.99.19]
keywords
chron
title
Calculate the Zodiac of a Date
description
Calculate the sign of zodiac of a date.
Function dateCheck [ensembleBMA v5.1.5]
keywords
chron
title
Checks date format.
description
Checks that the character form of a vector of dates conforms to YYYYMMDDHH or YYYYMMDD.
Function julTOymdh [ensembleBMA v5.1.5]
keywords
chron
title
Convert Julian dates to character format.
description
Converts Julian dates to YYYYMMDDHH or YYYYMMDD character format.
Function ymdhTOjul [ensembleBMA v5.1.5]
keywords
chron
title
Convert to Julian dates.
description
Converts YYYYMMDDHH or YYYYMMDD dates to Julian dates.