rasterToPoints: Raster to points conversion
In raster: Geographic Data Analysis and Modeling

Description Usage Arguments Details Value Examples

Raster to point conversion. Cells with NA are not converted. A function can be used to select a subset of the raster cells (by their values).

1	rasterToPoints(x, fun=NULL, spatial=FALSE, ...)

`x`	A Raster* object
`fun`	Function to select a subset of raster values
`spatial`	Logical. If `TRUE`, the function returns a SpatialPointsDataFrame object
`...`	Additional arguments. Currently only `progress` to specify a progress bar. "text", "window", or "" (the default, no progress bar)

fun should be a simple function returning a logical value.

E.g.: fun=function(x){x==1} or fun=function(x){x>3}

A matrix with three columns: x, y, and v (value), or a SpatialPointsDataFrame object

 
r <- raster(nrow=18, ncol=36)
values(r) <- runif(ncell(r)) * 10
r[r>8] <- NA
p <- rasterToPoints(r)
p <- rasterToPoints(r, fun=function(x){x>6})
#plot(r)
#points(p)