Yuan et al, I’ve figured out a quick/easy fix for the missing lines issue. I know this probably only effects graticule-like shapes, but it was driving me nuts. So, check out 7.6 Displaying 3-D Relief Data ( <http://marinedataliteracy.org/relief/idv_3d.htm> "Topography") and Vector Overlays ("Maps") in IDV to see a few added panels. Murray
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