locationtech/spatial4j

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LocationTech Spatial4j: A Geospatial Library for Java

Stars: 961
Forks: 172
Open beginner issues: 0
Indexed issues: 74

Dominant language: Java
License: No license data
Last GitHub push: Aug 17, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

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74 open issues indexed

Given latitude and longitude, how to find in what country those coordinates are? Open

question

Difficulty 5/5 Over a week Newbie friendliness 20/100

locationtech/spatial4j#233 · 1 comment · Opened Jan 17, 2025
Validation for self-intersection WKT Multipolygon fails at the WKTReader, while works when wrapped in a `GEOMETRYCOLLECTION` Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

locationtech/spatial4j#232 · 1 comment · Opened Sep 20, 2024
Can't add property when trying to write GeoJson Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

locationtech/spatial4j#231 · 1 comment · Opened Jan 31, 2024
Shortest distance between Shape (LineString) and a Point Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

locationtech/spatial4j#230 · 2 comments · Opened Aug 23, 2023
GeoJSONs cannot be read when the properties are ordered differently than expected Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

locationtech/spatial4j#227 · 2 comments · Opened Jan 11, 2023
A question about distance calculations Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

locationtech/spatial4j#221 · Opened Jul 26, 2022
unwrapDateline on a polygon with a hole Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

locationtech/spatial4j#220 · Opened May 20, 2022
JtsShapeFactory MultipolygonBuilder fails to validate shape Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

locationtech/spatial4j#219 · 3 comments · 1 reaction · Opened Mar 7, 2022
Split packages between spatial4j and spatial4j-*-tests Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

locationtech/spatial4j#214 · 3 comments · Opened Dec 22, 2021
Validation of the polygon with spatial4j library fails Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

locationtech/spatial4j#209 · 1 comment · Opened Nov 30, 2021
ShapeFactoryImpl should have an option for expandBufForLongitudeSkew on a buffered line. Open

bug enhancement

Difficulty 4/5 3-5 days Newbie friendliness 42/100

locationtech/spatial4j#199 · Opened Nov 30, 2020
Buffer a LineString and get a Polygon Open

question

Difficulty 5/5 Over a week Newbie friendliness 25/100

locationtech/spatial4j#198 · 4 comments · Opened Nov 29, 2020
Converting from geoJson to wkt and back Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

locationtech/spatial4j#193 · 2 comments · Opened Sep 14, 2020
Z coordinate isn't used in JtsGeoJSONWriter Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

locationtech/spatial4j#191 · 3 comments · Opened Aug 12, 2020
JtsGeometry.getBuffered doesn't buffer across the dateline Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

locationtech/spatial4j#187 · Opened May 21, 2020
JtsGeometry.unwrapDateline creates an invalid polygon in some cases Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

locationtech/spatial4j#186 · Opened May 21, 2020
WKTReader returns Envelope instead of Polygon Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

locationtech/spatial4j#166 · 8 comments · 2 reactions · Opened Aug 31, 2018
WKTWriter empty point/geometrycollection WKT serialization Open

bug enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

locationtech/spatial4j#162 · 1 comment · Opened Aug 7, 2018
Difference in distance is not constant for point moving along a horizontal line parallel to the x-axis at a constant speed Open

question

Difficulty 3/5 1-2 days Newbie friendliness 35/100

locationtech/spatial4j#161 · 5 comments · Opened May 29, 2018
Update copyright headers to be generic Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

locationtech/spatial4j#160 · Opened Mar 28, 2018
Intersection between two routes (linestrings) Open

question

Difficulty 5/5 Over a week Newbie friendliness 15/100

locationtech/spatial4j#159 · 6 comments · Opened Mar 23, 2018
Unable to parse GeoJSON when type is set after coordinates Open

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

locationtech/spatial4j#156 · 1 comment · Opened Jan 15, 2018
jts.JTSGeometry.getBuffered with linestrings across the dateline Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

locationtech/spatial4j#149 · 1 comment · Opened Jul 25, 2017
Split JtsSpatialContext etc. to separate module and 'jar'. Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

locationtech/spatial4j#143 · 3 comments · Opened Sep 6, 2016
Test bug RE assertIntersect and non-normalized rectangles Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

locationtech/spatial4j#141 · Opened Apr 15, 2016
Double resolution trimmed in GeoJSONWriter Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

locationtech/spatial4j#140 · 11 comments · Opened Apr 4, 2016
Recent deprecations in SpatialContext do not include new method to use Open

Difficulty 2/5 Half a day Newbie friendliness 45/100

locationtech/spatial4j#137 · 3 comments · 1 reaction · Opened Mar 10, 2016
Add support for Geo3D Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

locationtech/spatial4j#134 · 3 comments · 4 reactions · Opened Feb 11, 2016
ShapeReader.read(String) Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

locationtech/spatial4j#129 · 2 comments · Opened Jan 6, 2016
"Side location conflicts" in geometry parsing Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

locationtech/spatial4j#126 · 1 comment · Opened Nov 9, 2015
Something funny with polygon dateline wrapping Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

locationtech/spatial4j#108 · Opened Jun 12, 2015
WithinDistanceCalculator Open

API enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

locationtech/spatial4j#82 · 1 comment · Opened May 6, 2014
GreatCircle Longitude intersection Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

locationtech/spatial4j#75 · Opened Feb 18, 2014
Compute GreatCircle Angle of intersection Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

locationtech/spatial4j#74 · Opened Feb 18, 2014
Compute the Bounding Box of a Geodesic Polygon Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

locationtech/spatial4j#71 · Opened Feb 17, 2014
Implementing Intersection between two Geodesics Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

locationtech/spatial4j#70 · 2 comments · Opened Feb 17, 2014
Implementing Utilities for Moving Between Lat/Long, Geocentric and Direction Cosine Points Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

locationtech/spatial4j#69 · 2 comments · Opened Feb 17, 2014
Implementing 3D Vector and Vector Utilities Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

locationtech/spatial4j#68 · Opened Feb 17, 2014
Implementing a Geodesic Polygon Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

locationtech/spatial4j#67 · 2 comments · Opened Feb 17, 2014
GeoBufferedLine Bounding Box re:issue 65 Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

locationtech/spatial4j#66 · Opened Feb 17, 2014
GreatCircle Bounding Box Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

locationtech/spatial4j#65 · Opened Feb 17, 2014
BufferedLineString should support adjacent pairs of points that are equal Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

locationtech/spatial4j#64 · Opened Feb 17, 2014
Improve BufferedLine geodesic skew compensation Open

InternIdea

Difficulty 5/5 Over a week Newbie friendliness 25/100

locationtech/spatial4j#60 · 3 comments · Opened Jan 6, 2014
Make InfBufLine simply InfLine (no buffer) or Ray Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

locationtech/spatial4j#59 · Opened Jan 6, 2014
Optimize point-in-circle (geodesic) calc tracking results of previous results Open

InternIdea

Difficulty 5/5 Over a week Newbie friendliness 25/100

locationtech/spatial4j#58 · Opened Jan 6, 2014
Compute polygon approximation of geodetic circle Open

InternIdea

Difficulty 5/5 Over a week Newbie friendliness 30/100

locationtech/spatial4j#57 · 1 comment · Opened Dec 16, 2013
Round-trip geohash encode/decode length 12 Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 30/100

locationtech/spatial4j#56 · Opened Dec 2, 2013
Remove context world bounds from API Open

API

Difficulty 4/5 3-5 days Newbie friendliness 25/100

locationtech/spatial4j#55 · Opened Nov 25, 2013
Geodetic bounding circle algorithm Open

InternIdea

Difficulty 5/5 Over a week Newbie friendliness 25/100

locationtech/spatial4j#54 · 2 comments · Opened Nov 20, 2013
Optionally tweak geohash encoding to not split extreme longitudes Open

enhancement wontfix

Difficulty 4/5 3-5 days Newbie friendliness 35/100

locationtech/spatial4j#52 · 1 comment · Opened Nov 20, 2013

locationtech/spatial4j

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