[ https://issues.apache.org/jira/browse/SIS-385?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Martin Desruisseaux updated SIS-385: ------------------------------------ Description: The {{DistanceUtils}} class has the following problems: * Inaccurate formula in {{getPointOnGreatCircle}}. * Inaccurate formula in {{getHaversineDistance}}. * Misnamed {{getHaversineDistance}} method. Charles Karney kindly provided descriptions of the problems [on the developer mailing list|https://lists.apache.org/thread.html/85ba228a3191f2952f2e37caa489f929daffd491da50484972af4aef@%3Cdev.sis.apache.org%3E], together with proposed fixes. One possible action is to deprecate {{DistanceUtils}} in favor of something like the {{GeodeticCalculator}} class [in the Geotk project|http://www.geotoolkit.org/apidocs/org/geotoolkit/referencing/GeodeticCalculator.html]. That class is a port in Java of following Fortran code: * ftp://ftp.ngs.noaa.gov/pub/pcsoft/for_inv.3d/source/forward.for ** subroutine DIRECT1 * ftp://ftp.ngs.noaa.gov/pub/pcsoft/for_inv.3d/source/inverse.for ** subroutine GPNARC (version 200005.26) ** subroutine GPNHRI (version 200208.09) ** written by Robert (Sid) Safford But we may take another source if suitable, for example [https://geographiclib.sourceforge.io/|https://geographiclib.sourceforge.io/]. was: The {{DistanceUtils}} class has the following problems: * Inaccurate formula in {{getPointOnGreatCircle}}. * Inaccurate formula in {{getHaversineDistance}}. * Misnamed {{getHaversineDistance}} method. Charles Karney kindly provided descriptions of the problems [on the developer mailing list|https://lists.apache.org/thread.html/85ba228a3191f2952f2e37caa489f929daffd491da50484972af4aef@%3Cdev.sis.apache.org%3E], together with proposed fixes. One possible action is to deprecate {{DistanceUtils}} in favor of something like the {{GeodeticCalculator}} class [in the Geotk project|http://www.geotoolkit.org/apidocs/org/geotoolkit/referencing/GeodeticCalculator.html]. That class is a port in Java of following Fortran code: * ftp://ftp.ngs.noaa.gov/pub/pcsoft/for_inv.3d/source/forward.for ** subroutine DIRECT1 * ftp://ftp.ngs.noaa.gov/pub/pcsoft/for_inv.3d/source/inverse.for ** subroutine GPNARC (version 200005.26) ** subroutine GPNHRI (version 200208.09) ** written by Robert (Sid) Safford But we may take another source if suitable. > Inaccurate formulas in DistanceUtils > ------------------------------------ > > Key: SIS-385 > URL: https://issues.apache.org/jira/browse/SIS-385 > Project: Spatial Information Systems > Issue Type: Bug > Components: Referencing > Affects Versions: 0.1-incubating, 0.2-incubating, 0.3, 0.4, 0.5, 0.6, 0.7, > 0.8 > Reporter: Martin Desruisseaux > Priority: Major > Fix For: 1.0 > > > The {{DistanceUtils}} class has the following problems: > * Inaccurate formula in {{getPointOnGreatCircle}}. > * Inaccurate formula in {{getHaversineDistance}}. > * Misnamed {{getHaversineDistance}} method. > Charles Karney kindly provided descriptions of the problems [on the developer > mailing > list|https://lists.apache.org/thread.html/85ba228a3191f2952f2e37caa489f929daffd491da50484972af4aef@%3Cdev.sis.apache.org%3E], > together with proposed fixes. > One possible action is to deprecate {{DistanceUtils}} in favor of something > like the {{GeodeticCalculator}} class [in the Geotk > project|http://www.geotoolkit.org/apidocs/org/geotoolkit/referencing/GeodeticCalculator.html]. > That class is a port in Java of following Fortran code: > * ftp://ftp.ngs.noaa.gov/pub/pcsoft/for_inv.3d/source/forward.for > ** subroutine DIRECT1 > * ftp://ftp.ngs.noaa.gov/pub/pcsoft/for_inv.3d/source/inverse.for > ** subroutine GPNARC (version 200005.26) > ** subroutine GPNHRI (version 200208.09) > ** written by Robert (Sid) Safford > But we may take another source if suitable, for example > [https://geographiclib.sourceforge.io/|https://geographiclib.sourceforge.io/]. -- This message was sent by Atlassian JIRA (v7.6.3#76005)