Your English is perfect. I forwarded my response without your contact info.
I *do* follow solr-users but only certain key words like "spatial" (and some other topics) and some words related to that domain (e.g. polygon, etc.). I so your post would have gotten my attention. On Wed, Jan 8, 2020 at 1:16 PM David Smiley <dsmi...@apache.org> wrote: > My response to a direct email (copying here with permission): > > It's possible; you'll certainly have to write some code here to make this > work, including some new Solr plugin; perhaps ValueSourceParser that can > compute a more accurate overlap. Such a thing would have to get the > Spatial4J Shape from the RptWithGeometrySpatialField (see getValues). Then > some casting to unwrap it to get to a JTS Geometry. All this is going to > be slow, so I propose you use Solr query re-ranking to only do this on the > top results that are based on the bounding-box overlap ratio as an > approximation. > > https://lucene.apache.org/solr/guide/8_3/query-re-ranking.html > > ---------- Forwarded message --------- > From: Marc > Date: Tue, Jan 7, 2020 at 6:14 AM > Subject: Solr spatial search - overlapRatio of polygons > To: David Smiley <dsmi...@apache.org> > > > > Dear Mr Smiley, > > I have a tricky question concerning the spatial search features of > Solr and therefore I am directly contacting you, as a specialist. > > Currently I am developing a new catalogue for our map collection with > Solr. I would like to sort the search results by the overlap ratio of > the search rectangle and the polygon of the map corners. Solr provides > such a feature for comparing and sorting bounding boxes only. > But it should be possible to compare polygons with the help of JTS > functions > ( > locationtech.github.io/jts/javadoc/org/locationtech/jts/geom/Geometry.html). > > With intersection() you can compute the geometry of the overlapping > part. Afterwards you may calculate the size of it with getArea() and > compare it with the size of the search rectangle. > Is there a way to use such JTS functions in a Solr query? Or do you > know another option to sort by the overlap ratio of polygons? > > >
