[GitHub] [streampipes] dominikriemer opened a new issue, #796: Improve Distance Calculator with more accuracy

[GitBox <gi...@apache.org>]

dominikriemer opened a new issue, #796:
URL: https://github.com/apache/streampipes/issues/796

   at the moment  the Haversine formula is used to calculate the distance between 2 lat/lng spherical points. Using the Vincenty solutions leads to a more accurate result
   
   https://github.com/apache/streampipes/tree/dev/streampipes-extensions/streampipes-processors-geo-jvm/src/main/java/org/apache/streampipes/processors/geo/jvm/processor/staticdistancecalculator
   
   
   The distance is calculated from a static point 
   Berlin 
   lat 52.520008 
   lng 13.404954
   
   ||city|| distance_sp|| distance Vincenty ||  alpha ||
   |Karlsruhe| 524.871 | 525.735 | -0.864 |
   | Sidney | 16094.221|  16088.138 | 6.083 |
   |Hamburg |  255.306 | 256.015 | -0.709 |
   | New York | 6384.996 | 6402.425 | -17.429 |
   
   
   Backgroundinfo https://www.neovasolutions.com/2019/10/04/haversine-vs-vincenty-which-is-the-best/
   
   Testdata:
    [^City_Koords.csv] 
   
   
   Imported from Jira [STREAMPIPES-641](https://issues.apache.org/jira/browse/STREAMPIPES-641). Original Jira may contain additional context.
   Reported by: micklich.
   Subtask of issue #795


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[GitHub] [streampipes] flomickl commented on issue #796: Improve Distance Calculator with more accuracy

[GitBox <gi...@apache.org>]

flomickl commented on issue #796:
URL: https://github.com/apache/streampipes/issues/796#issuecomment-1374123751

   My plan is to add this lib to get better performance for calculation and other tasks
   
   https://github.com/geographiclib/geographiclib-java
   
   ```
   <!-- https://mvnrepository.com/artifact/net.sf.geographiclib/GeographicLib-Java -->
   <dependency>
       <groupId>net.sf.geographiclib</groupId>
       <artifactId>GeographicLib-Java</artifactId>
       <version>2.0</version>
   </dependency>
   ```
   
   
   Due to MIT license ->  https://geographiclib.sourceforge.io/LICENSE.txt
   I think it is safe to add.
   It is correct @dominikriemer ?


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