spatstat (version 1.60-1)

as.mask.psp: Convert Line Segment Pattern to Binary Pixel Mask

Description

Converts a line segment pattern to a binary pixel mask by determining which pixels intersect the lines.

Usage

as.mask.psp(x, W=NULL, ...)

Arguments

x

Line segment pattern (object of class "psp").

W

Optional window (object of class "owin") determining the pixel raster.

…

Optional extra arguments passed to as.mask to determine the pixel resolution.

Value

A window (object of class "owin") which is a binary pixel mask (type "mask").

Details

This function converts a line segment pattern to a binary pixel mask by determining which pixels intersect the lines.

The pixel raster is determined by W and the optional arguments …. If W is missing or NULL, it defaults to the window containing x. Then W is converted to a binary pixel mask using as.mask. The arguments … are passed to as.mask to control the pixel resolution.

See Also

pixellate.psp, as.mask.

Use pixellate.psp if you want to measure the length of line in each pixel.

Examples

# NOT RUN {
  X <- psp(runif(10), runif(10), runif(10), runif(10), window=owin())
  plot(as.mask.psp(X))
  plot(X, add=TRUE, col="red")
# }