create objects of class SpatialLines or
SpatialLinesDataFrame from
lists of Lines objects and data.frames; extract list od Lines from a SpatialLines object
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)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.
list with objects of class Lines-class
Object of class "CRS"; holding a valid proj4 string
object of class SpatialLines-class
object of class data.frame; the number of rows in data
should equal the number of Lines elements in sl
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
SpatialLinesDataFrame object
Object of class Lines
Object of class Line, or two-column matrix with points
if FALSE, Euclidean distance, if TRUE Great Circle distance in kilometers
logical; if TRUE return scalar length of sum of
segments in Line, if FALSE return vector with segment lengths
SpatialLines-class