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just a note concerning the discussion below: g3topbm is not doing the truncation, the problem lies with alden and has since the onset of the DIFAX idd era. I too tried to get the problem resolved with alden and met with the same success as the gentleman below. I've found that just the very edges of the DIFAX surface maps are truncated (alden problem) and have been using the pbm utilities with great success for the last two years. You must understand that DIFAX is a very low priority with Alden, so don't expect too much from them. good luck. -andrew devanas associate in meteorology florida state university
Andrew, In my experience, some DIFAX maps are in fact not truncated at all, though size is still an issue. However, other maps are truncated in a way that removes the labels or otherwise renders them essentially useless. I deduce from your comments above that surface maps are acceptable, so Alden's DIFAX products are not a total loss. -- Dave