sp: SpatialLines – R documentation

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SpatialLines

create objects of class SpatialLines or SpatialLinesDataFrame

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`	logical; if `TRUE` return scalar length of sum of segments in Line, if `FALSE` return vector with 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.

SpatialLines

Description

Usage

Arguments

Value

See Also

sp

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