SpatialLinesMidPoints

0th

Percentile

Line midpoints

The function onverts SpatialLinesDataFrame to SpatialPointsDataFrame with points at the midpoints of the line segments.

Keywords
spatial
Usage
SpatialLinesMidPoints(sldf)
Arguments
sldf

A SpatialLines or SpatialLinesDataFrame object

Details

The function builds a SpatialPointsDataFrame from the midpoints of Line objects belonging to Lines objects in an object inheriting from a Spatial Lines object. The output data slot contains an index variable showing which Lines object the midpoints belong to.

Value

A SpatialPointsDataFrame object created from the input object.

Aliases
  • SpatialLinesMidPoints
Examples
# NOT RUN {
xx <- readShapeLines(system.file("shapes/fylk-val.shp", package="maptools")[1],
 proj4string=CRS("+proj=utm +zone=33 +datum=WGS84"))
plot(xx, col="blue")
spdf <- SpatialLinesMidPoints(xx)
plot(spdf, col="orange", add=TRUE)
# }
Documentation reproduced from package maptools, version 0.9-5, License: GPL (>= 2)

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