Need a standalone Java library for performing spatial calculations on lat/lon data [closed]

Answer 1

I believe GeoTools would satisfy your requirements. Note that it does have facilities for doing graphics/maps, but they can be left unused easily enough.

Answer 2

I've used STRtree java class to index by lat lng data and distance queries https://locationtech.github.io/jts/javadoc/org/locationtech/jts/index/strtree/STRtree.html

Answer 3

There is a new library Spatial4J that seems to fullfill your needs, it supports various spaces and shapes

Spatial4j is a general purpose spatial / geospatial ASL licensed open-source Java library (...)

I haven't used it so far but the README is complete, and repositery is rather popular, and it's available on maven repositery I was looking for such spatial library when I end up both on the repo and on this question.

Answer 4

Simplelatlng gives more simple API for this:

https://code.google.com/p/simplelatlng/wiki/GettingStarted

Answer 5

In spite of your desire to avoid a library that is used to draw maps, I'd recommend OpenMap. The com.bbn.openmap.geo package of that library does most if not all of the things you are asking for.