raster (version 2.5-8)

rasterToContour: Raster to contour lines conversion

Description

RasterLayer to contour lines. This is a wrapper around contourLines

Usage

rasterToContour(x, maxpixels=100000, ...)

Arguments

x

a RasterLayer object

maxpixels

Maximum number of raster cells to use; this function fails when too many cells are used

...

Any argument that can be passed to contourLines

Value

SpatialLinesDataFrame

Details

Most of the code was taken from maptools::ContourLines2SLDF, by Roger Bivand & Edzer Pebesma

Examples

# NOT RUN {
f <- system.file("external/test.grd", package="raster")
r <- raster(f)
x <- rasterToContour(r)
class(x)
plot(r)
plot(x, add=TRUE)
# }