spacetime (version 0.5-7)

STIDF-class: Class "STIDF"

Description

A class for unstructured spatio-temporal data; for n spatial locations and times, n observations are available

Usage

STI(sp, time)
  STIDF(sp, time, data)
  ## S3 method for class 'STIDF':
[(x, i, j, ..., drop = FALSE)
  ## S3 method for class 'STIDF,STSDF':
coerce(from, to, strict=TRUE)

Arguments

sp

object of class Spatial

time

object holding time information; when STIDF is called, a non-ordered vector with times, e.g. POSIXct will also work, and rearrange the sp and data slots according to the ordering of time; for t

data

data frame with appropriate number of rows

x

an object of class STFDF

i

selection of record index (spatial/temporal entities), or character string with temporal selection

j

selection of attributes

...

ignored

drop

if TRUE and a single spatial entity is selected, an object of class xts is returned (NOT yet implemented); if TRUE and a single temporal entity is selected, and object of the appropriate Spatial class is return

from

object of class STFDF

to

target class

strict

ignored

Objects from the Class

Objects of this class carry full space/time grid data