The SimplePointLayer and the GeoPipeline have methods for this, but they do
make some assumptions. See
SimplePointLayer.findClosestPointsTo(Coordinate,int) and
GeoPipeline.startNeiarestNeighborLatLonSearch(Layer,Coordinate,int). The
former just calls the latter. The int passed is the number of geom
Hi Craig,
Any idea how to implement the knn in efficient way? We need to specify an
initial distance and if we do not find k neighbours
within that distance we need to increase it, which does not seem like very
efficient approach.
Thanks,
Alireza
On Tuesday, September 23, 2014 8:17:04 PM
If you want the distance to the centroid, just use getCentroid(). For
example, instead of g1.distance(g2) use
g1.getCentroid().distance(g2.getCentroid()).
On Wed, Sep 24, 2014 at 5:06 PM, Alireza Rezaei Mahdiraji <
alireza...@gmail.com> wrote:
>
> Regarding the distance, for inner point of a geom
Regarding the distance, for inner point of a geometry the distance returns
zero. Although, I saw the definition of the distance in
http://tsusiatsoftware.net/jts/javadoc/com/vividsolutions/jts/geom/Geometry.html#distance%28com.vividsolutions.jts.geom.Geometry%29
but expected to see something lik
I did not answer everything. But the JTS distance method will work for all
geometries, so that answers most of your questions.
The GeoPipeline methods also provide ways to find objects within distances
of other objects (using the rtree for optimized searches). And it provides
sorting too, so you c
The distance is calculated best using JTS. For example:
double distance = pointA.distance(pointB)
See
http://tsusiatsoftware.net/jts/javadoc/com/vividsolutions/jts/geom/Geometry.html#distance(com.vividsolutions.jts.geom.Geometry)
On Tue, Sep 23, 2014 at 3:26 PM, Alireza Rezaei Mahdiraji <
alireza
Hi All,
Given two geometries how do compute the distance between
them in neo4j spatial? For instance given two points stored in two nodes?
What other kind of distance are defined? For instance, is it possible to
find
distance between a point and a linestring/polygon or distance between two
