Class "ST"
An abstract class from which useful spatio-temporal classes are derived
ST(sp, time, endTime)
sp |
an object deriving from class Spatial, such as a SpatialPoints or SpatialPolygons |
time |
an object of class xts, or a time vector (currently: Date, POSIXct, timeDate, yearmon and yearqtr; are supported; see xts); in the latter case, it should be in time order |
endTime |
vector of class |
Objects of this class are not meant to be useful; only derived classes can be meaningful
sp:Object deriving from class "Spatial"
time:Object of class "xts"
signature(obj = "ST"): retrieves the attribute element
signature(obj = "ST"): retrieves the attribute element
signature(obj = "ST"): sets or replaces the attribute element
signature(obj = "ST"): sets or replaces the attribute element
argument (and object slot) sp can be pure geometry, or geometry with attributes. In the latter case, the geometries are kept with the sp slot, and only replicated (when needed) on coercion to the long format, with as.data.frame.
Slot time needs to be of class xts; if a time or date vector is passed as argument to SP, it will be converted into an xts object.
When endTime is missing, an error is thrown.
ST is meant as a super-class, and is not to be used for representing data, similar to Spatial in the sp package.
Edzer Pebesma, edzer.pebesma@uni-muenster.de
https://www.jstatsoft.org/v51/i07/
time = as.Date('2008-01-01')+1:2
library(sp)
sp = SpatialPoints(cbind(c(0,1),c(0,1)))
ST(sp, time, delta(time))Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.