I've been trying to use real-world Earth data for a mapping project using CC3+ and FT3. I've gotten as far as downloading a binary version of ETOPO1 data from the National Geophysical Data Center, and it shows up beautifully in FT3. The folks over at ProFantasy pointed me to a projection for FT3 that would match the one shown in the Cartographer's Annual 01; an Equal Area Lambert Projection segmented so that it shows two hemispheres. However...the projection splits the Eastern and Western hemispheres at the Prime meridian, which looks which cuts off the bulge of Africa and looks ugly. I want one that shows the Americas on one and Eurasia plus Africa on the other, the way atlases and grade school maps commonly do. This needs to do the split about 20 degrees West and 160 degrees East. Unfortunately, the projection code insists on a hard left boundary of -180 degrees and a hard right boundary of 180, and does not seem to comprehend splitting off 20 degree's worth of binary data off one side of the map and moving it to the other. This would also be a problem if I wanted maps of the Pacific that cross the International Date Line.

It was suggested that I import the file into Wilbur, do a toridial rotation, and export it back, but since I've never used Wilbur, I don't know how to do that. I'm not seeing a common data format in the import/export options for either Wilbur or FT3, either. Any other suggestions?