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custom polyconic projection

Question asked by dmede on Jul 14, 2020
Latest reply on Jul 29, 2020 by dmede

I'm helping an artist with a project that requires a modified polyconic projection of the world, centered on N America.


The artist wants to render globe gores, like the image attached below, but with the center on the US (around 100w 40n). In both ArcMap and ArcGIS Pro I am able to modify the Central Meridian of standard polyconic coordinate system to re center along 100w meridian, but I can't make any changes to the Latitude of Origin to put N America under the center of the north pole. FYI, the artist has another team member who is using Global Mapper to generate the centered globe gores, but is also unable to modify the coordinate system to recenter the map.


Any advice on how to change either the coordinate system itself or the input raster (Natural Earth GeoTIF) to get the desired effect is greatly appreciated.