Spatial Search skipping records when one location is close to origin, another
is away and radius is wider
---------------------------------------------------------------------------------------------------------
Key: LUCENENET-483
URL: https://issues.apache.org/jira/browse/LUCENENET-483
Project: Lucene.Net
Issue Type: Bug
Components: Lucene.Net Contrib
Affects Versions: Lucene.Net 2.9.4g, Lucene.Net 2.9.4
Environment: .Net framework 4.0
Reporter: Aleksandar Panov
Running a spatial query against two locations where one location is close to
origin (less than a mile), another one is away (24 miles) and radius is wider
(52 miles) returns only one result. Running query with a bit wider radius
(53.8) returns 2 results.
{code}
// Origin
private double _lat = 42.350153;
private double _lng = -71.061667;
private const string LatField = "lat";
private const string LngField = "lng";
//Locations
AddPoint(writer, "Location 1", 42.0, -71.0); //24 miles away from origin
AddPoint(writer, "Location 2", 42.35, -71.06); //less than a mile
[TestMethod]
public void TestAntiM()
{
_directory = new RAMDirectory();
var writer = new IndexWriter(_directory, new WhitespaceAnalyzer(),
true, IndexWriter.MaxFieldLength.UNLIMITED);
SetUpPlotter(2, 15);
AddData(writer);
_searcher = new IndexSearcher(_directory, true);
//const double miles = 53.8; // Correct. Returns 2 Locations.
const double miles = 52; // Incorrect. Returns 1 Location.
Console.WriteLine("testAntiM");
// create a distance query
var dq = new DistanceQueryBuilder(_lat, _lng, miles, LatField,
LngField, CartesianTierPlotter.DefaltFieldPrefix, true);
Console.WriteLine(dq);
//create a term query to search against all documents
Query tq = new TermQuery(new Term("metafile", "doc"));
var dsort = new DistanceFieldComparatorSource(dq.DistanceFilter);
Sort sort = new Sort(new SortField("foo", dsort, false));
// Perform the search, using the term query, the distance filter,
and the
// distance sort
TopDocs hits = _searcher.Search(tq, dq.Filter, 1000, sort);
int results = hits.TotalHits;
ScoreDoc[] scoreDocs = hits.ScoreDocs;
// Get a list of distances
Dictionary<int, Double> distances = dq.DistanceFilter.Distances;
Console.WriteLine("Distance Filter filtered: " + distances.Count);
Console.WriteLine("Results: " + results);
Console.WriteLine("=============================");
Console.WriteLine("Distances should be 2 " + distances.Count);
Console.WriteLine("Results should be 2 " + results);
Assert.AreEqual(2, distances.Count); // fixed a store of only
needed distances
Assert.AreEqual(2, results);
}
{code}
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
