char2dms function

Convert character vector to DMS-class object

These two helper functions convert character vectors and decimal degree vectors to the DMS-class representation of degrees, minutes, and decimal seconds. "DMS" objects cannot contain NAs.

Methods

• from = "DMS", to = "numeric": coerce a "DMS" object to a "numeric" vector
• from = "DMS", to = "character": coerce a "DMS" object to a "character" vector (the as.character.DMS S3 method is also available)

char2dms(from, chd = "d", chm = "'", chs = "\"")
dd2dms(dd, NS = FALSE)

Arguments

• from: character vector of degree, minute, decimal second data
• chd: degree character terminator
• chm: minute character terminator
• chs: second character terminator
• dd: numeric vector of decimal degrees
• NS: logical, TRUE for north/south decimal degrees, FALSE for east/west decimal degrees

Details

In char2dms, the input data vector should use a regular format, such as that used in the PROJ.4 library, with a trailing capital (NSWE) indicating compass direction.

Returns

Both functions return a "DMS" object.

Author(s)

Roger Bivand Roger.Bivand@nhh.no

See Also

DMS-class

Examples

data(state)
str(state.center$y)
stateN <- dd2dms(state.center$y, NS=TRUE)
str(attributes(stateN))
ch.stateN <- as.character(stateN)
str(ch.stateN)
stateNa <- char2dms(ch.stateN)
str(attributes(stateNa))
ch.stateN <- as(stateN, "character")
str(ch.stateN)
stateNa <- char2dms(ch.stateN)
str(attributes(stateNa))