centdist | R Documentation |
Find the centroid distance between two identified objects/features.
centdist(x, y, distfun = "rdist", loc = NULL, ...)
x,y |
objects of class “owin” (package spatstat) containing binary images of features of interest. |
distfun |
character string naming a distance function that should take arguments |
loc |
two-column matrix giving the location values for which to calculate the centroids. If NULL, indices according to the dimension of the fields are used. |
... |
optional arguments to |
This is a simple function that calculates the centroid for each of x and y (to get their centroids), and then finds the distance between them according to distfun
. The centroids are calculated using FeatureProps
.
numeric giving the centroid distance.
Eric Gilleland
FeatureProps
, as.im
, solutionset
, FeatureMatchAnalyzer
, FeatureComps
x <- y <- matrix(0, 10, 12) x[2:3,c(3:6, 8:10)] <- 1 y[c(4:7, 9:10),c(7:9, 11:12)] <- 1 x <- as.im(x) x <- solutionset(x>0) y <- as.im(y) y <- solutionset(y>0) centdist(x,y)
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