NAPLPS decoding (FAA weather images)

["Neulinger, Nathan" <nneul@umr.edu>]

Just a heads up in case anyone is interested - I've managed to put together
a 95% functional decoder for the NAPLPS format weather images you can
retrieve from DUATS. 

At the moment, it doesn't quite handle arcs and circles properly (but the
maps don't appear to use those. And the text spacing is a bit screwy.

Right now, it takes the naplps source data and converts it to a postscript
output file. I was intending to have it convert to an intermediate format
and then have a set of different output modules - such as postscript, gif,
jpeg, svg, etc. 

Anyway, if I'm motivated enough, I might try to package this up as a perl
module at some point.

-- Nathan
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