get.locations {imager} | R Documentation |
Return coordinates of subset of pixels
Description
Typical use case: you want the coordinates of all pixels with a value above a certain threshold
Usage
get.locations(im, condition)
Arguments
im |
the image |
condition |
a function that takes scalars and returns logicals |
Value
coordinates of all pixels such that condition(pixel) == TRUE
Author(s)
Simon Barthelme
Examples
im <- as.cimg(function(x,y) x+y,10,10)
get.locations(im,function(v) v < 4)
get.locations(im,function(v) v^2 + 3*v - 2 < 30)
[Package imager version 1.0.2 Index]