SpatialLines
From sp v0.9-90
by Edzer Pebesma
create objects of class SpatialLines or SpatialLinesDataFrame
create objects of class SpatialLines or
SpatialLinesDataFrame from
lists of Lines objects and data.frames; extract list od Lines from a SpatialLines object
- Keywords
- manip
Usage
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)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 indatashould equal the number ofLineselements insl - 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
datawith 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
SpatialLinesreturns object of classSpatialLines;SpatialLinesDataFramereturns object of classSpatialLinesDataFramegetSpatialLinesMidPointsreturns an object of classSpatialPoints,each point containing the (weighted) mean of the lines elements; weighted in the sense that mean is called twice.
See Also
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