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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| \name{NALevel} | ||
| \alias{NALevel} | ||
| %- Also NEED an '\alias' for EACH other topic documented here. | ||
| \title{Replace NAs in a Factor by a Given Level | ||
| %% ~~function to do ... ~~ | ||
| } | ||
| \description{In order to replace the NAs in a factor an additional level has to be defined first. | ||
| This function does this and replaces the NAs by the given level. | ||
| %% ~~ A concise (1-5 lines) description of what the function does. ~~ | ||
| } | ||
| \usage{ | ||
| NALevel(x, level) | ||
| } | ||
| %- maybe also 'usage' for other objects documented here. | ||
| \arguments{ | ||
| \item{x}{a vector which will be turned into a factor. | ||
| %% ~~Describe \code{x} here~~ | ||
| } | ||
| \item{level}{the name for the new level | ||
| %% ~~Describe \code{level} here~~ | ||
| } | ||
| } | ||
| \value{the vector x with the NAs replaced by level | ||
| %% ~Describe the value returned | ||
| %% If it is a LIST, use | ||
| %% \item{comp1 }{Description of 'comp1'} | ||
| %% \item{comp2 }{Description of 'comp2'} | ||
| %% ... | ||
| } | ||
| \author{Andri Signorell <andri@signorell.net> | ||
| %% ~~who you are~~ | ||
| } | ||
| \seealso{\code{\link{factor}}, \code{\link{levels}} | ||
| %% ~~objects to See Also as \code{\link{help}}, ~~~ | ||
| } | ||
| \examples{ | ||
| x <- c(LETTERS[1:5], NA) | ||
| table(NALevel(x, "something else")) | ||
|
|
||
| } | ||
| % Add one or more standard keywords, see file 'KEYWORDS' in the | ||
| % R documentation directory (show via RShowDoc("KEYWORDS")): | ||
| % \keyword{ ~kwd1 } | ||
| % \keyword{ ~kwd2 } | ||
| % Use only one keyword per line. | ||
| % For non-standard keywords, use \concept instead of \keyword: | ||
| % \concept{ ~cpt1 } | ||
| % \concept{ ~cpt2 } | ||
| % Use only one concept per line. |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| \name{as.ym} | ||
| \alias{as.ym} | ||
| \alias{as.Date.ym} | ||
| \alias{AddMonths.ym} | ||
|
|
||
| \title{A Class for Dealing with the Yearmonth Format | ||
| } | ||
| \description{ | ||
| The representation of year and month information in YYYYYMM format as an integer is often handy and a useful and efficient data structure. Adding a number of months to such a date is not quite catchy, however, since the date structure is to be retained. For example, 201201 - 2 [months] is expected to result in 201111 instead of 201199. AddMonthsYM does this job. | ||
| } | ||
| \usage{ | ||
|
|
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| as.ym(x) | ||
| \method{as.Date}{ym}(x, d = 1, ...) | ||
|
|
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| \method{AddMonths}{ym}(x, n, ...) | ||
| } | ||
| %- maybe also 'usage' for other objects documented here. | ||
| \arguments{ | ||
| \item{x}{a vector of integers, representing the dates in the format YYYYMM, to which a number of months has to be added. YYYY must lie in the range of 1000-3000, MM in 1-12. | ||
| } | ||
| \item{d}{the day to be used for converting a yearmonth to a date. Default is 1. | ||
| %% ~~Describe \code{n} here~~ | ||
| } | ||
| \item{n}{the number of months to be added. If n is negative the months will be subtracted. | ||
| %% ~~Describe \code{n} here~~ | ||
| } | ||
| \item{\dots}{further arguments (not used here).} | ||
| } | ||
| \details{All parameters will be recyled if necessary. The therefore used function \code{\link{mapply}} will display a warning, if the longer argument is not a multiple of the length of the shorter one. | ||
| } | ||
| \value{a vector of class \code{integer} with the same dimension as x, containing the transformed dates. | ||
| } | ||
| \author{Andri Signorell <andri@signorell.net>, originally based on code by Roland Rapold | ||
| } | ||
|
|
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| \seealso{\code{\link{AddMonths}}; Date functions, like \code{\link{Year}}, \code{\link{Month}}, etc. | ||
| %% ~~objects to See Also as \code{\link{help}}, ~~~ | ||
| } | ||
| \examples{ | ||
|
|
||
| Month(as.ym(202408)) | ||
| Year(as.ym(202408)) | ||
|
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||
| Year(as.Date("2024-12-05")) | ||
| Year(as.ym(202412)) | ||
|
|
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| Month(as.Date("2024-12-05"), fmt = "mm") | ||
| Month(as.ym(202412), fmt="mm") | ||
|
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| AddMonths(201511, 5) | ||
|
|
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| AddMonths(c(201511, 201302), c(5, 15)) | ||
| AddMonths(c(201511, 201302), c(5, -4)) | ||
| } | ||
| % Add one or more standard keywords, see file 'KEYWORDS' in the | ||
| % R documentation directory. | ||
| \keyword{ chron } |
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