
I have a global raster dataset that has its origin at the Greenwich 
meridian and counts from here 360 degrees around the dateline to arrive 
back at Greenwich.
All my other datasets have their origin at the dateline and count from 
-180 degrees to plus 180 degrees.
I am at a loss how to line them up. The Shift operation add values to 
the coordinates and moves the whole raster rather than just the origin. 
I tried to Project Raster and define a custom coordinate system whose 
prime meridian is at -180 degrees but that did not work either. The best 
I managed to do is to move the raster to go from 180 degrees to 540 
degrees and thereby align nicely in the 180-360 range. My map, however, 
now goes from 0 to 540 degrees and does not wrap around - neither 
visually, nor in analysis
Do you Robert, or anybody else have any ideas how to get all datasets to 
fit within one 360 degree-wide range? I don't care whether this is from 
-180 to +180, or from 0 to 360.
Cheers,
     Jochen

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