filterCircularOnes: Creates a circular filter
In hansoleorka/myR: Collection of r functions for hansoleorka

Description Usage Arguments Details Value Author(s) See Also Examples

Create a circular filter of ones

1	filterCircularOnes(w = 3, CircularRadius = "euclidan")

`w`	filter size
`CircularRadius`	How to define the radius of the circular filter, either in a euclidian distance space (w-1)/2 or by using the pixels w/2. Defaults to "euclidian"

The fitler should be used toghter with the focal function in the raster-package.

a matrix zeros and ones

Hans Ole Orka hans.ole.orka@gmail.org

focal

windows()
(f <- filterCircularOnes(w=3))
image(f)
(f<- filterCircularOnes(w=5))
image(f)
(f <- filterCircularOnes(w=9))
(f <- filterCircularOnes(w=19))
image(f)