Displaying 1 result from an estimated 1 matches for "euclidian_dist".
2010 May 20
1
finding euclidean proximate points in two datasets
...mity
threshold of each point in X differs (X$threshold). I've constructed
this myself already, but it's horrificly slow with a dataset of 40k+
points in one set, and a 700 in the other.
A very inefficient example of what I'm looking for:
for (pt in X$idx) {
proximity[i] = euclidian_dist(X[pt]$x, X[pt]$y, Y$x, Y$y) <
X$threshold
i = i+1
}
Perhaps crossdist() in spatstat is what I should use, and then code a
comparison with X$threshold after the cross-distances are computed.
However, I was wondering if there was another tool I should be
considering. Any and all thoughts ar...