move (version 1.0)

spTransform: Transform Move object projection method

Description

The spTransform function transforms the coordinates stored in the Move object from the default longlat coordinates to the default aeqd (Azimuthal Equi-distance) projection or a different projection.

Usage

## S3 method for class 'Move,character':
spTransform(x,CRSobj,center=FALSE)
  ## S3 method for class 'Move,missing':
spTransform(x,center=FALSE,...)

Arguments

x

a Move or a MoveStack object

CRSobj

a CRS like character that describes the projection method to which the coordinates should be transformed, if missing "+proj=aequd" is used as default value

center

logical, if TRUE the center of the coordinate system is the center of the track; FALSE is default

...

for additional arguments

Details

The spTransform function transforms the coordinates of a Move object by default from "+proj=longlat" to "+proj=aeqd". In this format the coordinates can be used by the brownian.bridge.dyn function. If center is TRUE the center of the coordinate system is set to the center of the track.

Examples

## create a Move object
leroy <- move(system.file("extdata","leroy.csv.gz",package="move"))

## transform the Move object by default into "+aeqd" projection method 
## and center the coordinate system
spTransform(leroy, center=TRUE)

## transform the Move object into another projection method, like mollweide
spTransform(leroy, CRSobj="+proj=moll")

##check projection method
proj4string(leroy)
spTransform(leroy, CRSobj=CRS("+proj=moll"))
load(system.file("extdata", "move.RData", package="move"), .GlobalEnv)
stack <- moveStack(list(leroy,leroy))
spTransform(stack)