Importing a map in Pierce quincuncial

[Barwickian]

A friend has asked my to make a globe based on a map he has in Pierce quincuncial format, with the centre based on the south pole (and hence the corners all representing the north pole).

How do I import the map and tell Geocart that the corners all represent the north pole?

[daan]

Hello Barwickian, and welcome to the forums.

The detailed process is in the manual, section 7.5. But in outline,

1. Place the map image (TIFF, JPEG, or Photoshop PSD) into a Geocart window.
2. Create a new Peirce quincuncial map to overlay on top of the image. (The databases you use don’t matter, but you probably don’t want raster imagery getting in the way.)
3. Adjust the size and position of the map you create to precisely align with the image.
4. Adjust your map’s resolution to match the resolution of the image.
5. Save the document as a “Reprojection database”.
6. Open a new window, create a map using a projection suitable for making a globe.
7. Add the reprojection database from (5) into the map as a database.

Does that help?

Cheers!
— daan

[Barwickian]

That helps immensely. Thank you.

[daan]

Please don’t forget to set quality to Final Quality in the Map men for best results.

— daan