SpatialLines: create objects of class SpatialLines or SpatialLinesDataFrame

In dis-organization/sp_dplyrexpt: Classes and Methods for Spatial Data

Description

create objects of class SpatialLines or SpatialLinesDataFrame from lists of Lines objects and data.frames; extract list od Lines from a SpatialLines object

Usage

 
SpatialLines(LinesList, proj4string = CRS(as.character(NA)))
SpatialLinesDataFrame(sl, data, match.ID = TRUE)
as.SpatialLines.SLDF(SLDF)
getSpatialLinesMidPoints(SL)
LineLength(cc, longlat=FALSE, sum=TRUE)
LinesLength(Ls, longlat=FALSE)
SpatialLinesLengths(SL, longlat)

Arguments

LinesList	list with objects of class Lines-class
proj4string	Object of class "CRS"; holding a valid proj4 string
sl, SL	object of class SpatialLines-class
data	object of class data.frame; the number of rows in data should equal the number of Lines elements in sl
match.ID	logical: (default TRUE): match SpatialLines member Lines ID slot values with data.frame row names, and re-order the data frame rows if necessary; if character: indicates the column in data with Lines IDs to match
SLDF	SpatialLinesDataFrame object
Ls	Object of class Lines
cc	Object of class Line, or two-column matrix with points
longlat	if FALSE, Euclidean distance, if TRUE Great Circle distance in kilometers
sum	default return scalar length of sum of segments in Line, if FALSE, return vector of segment lengths

Value

SpatialLines returns object of class SpatialLines; SpatialLinesDataFrame returns object of class SpatialLinesDataFrame getSpatialLinesMidPoints returns an object of class SpatialPoints,each point containing the (weighted) mean of the lines elements; weighted in the sense that mean is called twice.

See Also

SpatialLines-class

dis-organization/sp_dplyrexpt documentation built on May 15, 2019, 8:52 a.m.