trip (version 1.8.5)

as.Other: As ("trip", other-classes)

Description

Coercing trip objects to other classes.

Function to create a SpatialLinesDataFrame from a trip object, resulting in a line segment for each implicit segment along the tracks. The object stores the start and end times, duration and the ID of the segment.

Usage

# S3 method for trip
as.ppp(X, ..., fatal)
# S3 method for trip
as.psp(x, ..., from, to)
as.track_xyt.trip(x, ..., from, to)
explode(x, ...)

Arguments

X

trip object.

...

reserved for future methods

fatal

Logical value, see Details of as.ppp

x

trip object

from

see as.psp for that method.

to

See as.psp.

Value

ppp object

psp object

SpatialLinesDataFrame

SpatialLinesDataFrame object with each individual line segment identified by start/end time and trip ID

Examples

# NOT RUN {
 d <- data.frame(x=1:10, y=rnorm(10), tms=Sys.time() + 1:10, id=gl(2, 5))
sp::coordinates(d) <- ~x+y
## this avoids complaints later, but these are not real track data (!)
sp::proj4string(d) <- sp::CRS("+proj=laea +ellps=sphere",  doCheckCRSArgs = FALSE)
tr <- trip(d, c("tms", "id"))

 as(tr, "ppp")
# }
# NOT RUN {
 d <- data.frame(x=1:10, y=rnorm(10), tms=Sys.time() + 1:10, id=gl(2, 5))
sp::coordinates(d) <- ~x+y
## this avoids complaints later, but these are not real track data (!)
sp::proj4string(d) <- sp::CRS("+proj=laea +ellps=sphere", doCheckCRSArgs = FALSE)
tr <- trip(d, c("tms", "id"))

 as.psp.trip(tr)
# }
# NOT RUN {
 d <- data.frame(x=1:10, y=rnorm(10), tms=Sys.time() + 1:10, id=gl(2, 5))
sp::coordinates(d) <- ~x+y
## this avoids complaints later, but these are not real track data (!)
sp::proj4string(d) <- sp::CRS("+proj=laea +ellps=sphere", doCheckCRSArgs = FALSE)
tr <- trip(d, c("tms", "id"))

spldf <- explode(tr)
summary(tr)
# }