Martin Desruisseaux created SIS-542:
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Summary: Mercator auxiliary sphere
Key: SIS-542
URL: https://issues.apache.org/jira/browse/SIS-542
Project: Spatial Information Systems
Issue Type: Sub-task
Components: Referencing
Reporter: Martin Desruisseaux
Assignee: Martin Desruisseaux
This operation method is defined by ESRI:
https://desktop.arcgis.com/en/arcmap/latest/map/projections/mercator.htm
Of particular interest the meaning of "Auxiliary Sphere Type" parameter:
* 0 = use semimajor axis or radius of the geographic coordinate system
* 1 = use semiminor axis or radius
* 2 = calculate and use authalic radius
* 3 = use authalic radius and convert geodetic latitudes to authalic latitudes
Types 0 to 2 are easy, type 3 is more tricky and may not be supported in the
first version. Type 0 is equivalent to "Popular Visualisation Pseudo Mercator"
projection method.
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