Dasst (version 0.3.4)

addDate<-: Add date class to objects of class Dasst

Description

addDate<- adds a column of class date to tables of the object of class '>Dasst.

Arguments

x

An object of class '>Dasst.

...

Other parameters: format, character vector encoding the date format;

value

A formula, numeric vector or character vector. Order of the column fields from where dates can be composed.

Value

The actual object.

Details

This method adds a column of class date to tables of the object of class '>Dasst. Dates expressed as string or integers may be converted and stored as date objects in a new column whose name begins with "date_" and follows with the names of column fields involved in the date extraction.

So far, the new column will not be saved if the write method is invoked.

Examples

# NOT RUN {
data(plantGrowth)
addDate(plantGrowth) <- ~ YEAR + DOY

# or
addDate(plantGrowth) <- c("YEAR", "DOY")

# or
addDate(plantGrowth) <- c(1, 2)

# Only one tables 1 and specifying date format
addDate(plantGrowth, index=c(1,2), format="%Y%j") <- ~ YEAR + DOY
# }