| SpatialLines {sp} | R Documentation |
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) getSLlinesSlot(SL) getSLLinesIDSlots(SL) getSpatialLinesMidPoints(SL) LineLength(cc, longlat=FALSE, sum=TRUE) LinesLength(Ls, longlat=FALSE) SpatialLinesLengths(SL, longlat)
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 |
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 |
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.