ISOdate2winter: Convert date to winter relative pertain
In eliaskrainski/emisc: Functions for personal utility
View source: R/ISOdate2winter.R
ISOdate2winter R Documentation
Convert date to winter relative pertain
Description
Takes any date in "POSIXct"
fomat and convert it to a relative number
to the mid of the winter period.
Usage
ISOdate2winter(Date, type = c("cos", "linear"))
Arguments
Date
POSIXct format date
type
if it is computed using a
cosine function or linear.
Details
consider the winter season in the
northern hemisphere and compute a pertain
function defined such that it will be near 1
in the center of the winter period and near
zero in the center of the summer period.
Considering meteorological seasons as:
Winter 1 Dec to 28(29) Feb;
Spring: 1 Mar to 31 May;
Summer: 1 Jun to 31 Aug,
Autumn: 1 Sep to 30 Nov.
This definition of the seasons gives 0
around July 16 and 1 around January 15.
Value
numeric in (0,1)
Examples
date <- ISOdate(2019, 1:12, 15)
ISOdate2winter(date)
ISOdate2winter(date, 'linear')
eliaskrainski/emisc documentation built on Nov. 18, 2024, 11:02 a.m.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
View source: R/ISOdate2winter.R
| ISOdate2winter | R Documentation |
Convert date to winter relative pertain
Description
Takes any date in "POSIXct" fomat and convert it to a relative number to the mid of the winter period.
Usage
ISOdate2winter(Date, type = c("cos", "linear"))
Arguments
Date |
POSIXct format date |
type |
if it is computed using a cosine function or linear. |
Details
consider the winter season in the northern hemisphere and compute a pertain function defined such that it will be near 1 in the center of the winter period and near zero in the center of the summer period. Considering meteorological seasons as: Winter 1 Dec to 28(29) Feb; Spring: 1 Mar to 31 May; Summer: 1 Jun to 31 Aug, Autumn: 1 Sep to 30 Nov. This definition of the seasons gives 0 around July 16 and 1 around January 15.
Value
numeric in (0,1)
Examples
date <- ISOdate(2019, 1:12, 15)
ISOdate2winter(date)
ISOdate2winter(date, 'linear')
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Embedding an R snippet on your website
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.