
Explore the Effects of Global Warming #76
Chapter 6, Mapping on Your Desktop
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HACK
ent layer over a DRG street map [Hack #72]—you have to first combine them
into one raster layer, perhaps by using r.patch or r.composite.
As PostScript is a vector format, vector display is where it really shines, and
you can layer as many vectors into your PostScript document as you like. ps.
map has different vector options for importing shapes, lines, and points.
However, the parameters are more or less the same for each vector option.
Obviously, with a tool as powerful as ps.map, we can only offer the outlines
of its general functionality, and we strongly recommend perusing the docu-
mentation if you’re interested in publishing your maps to the world this
way.
HACK
#76
Explore the Effects of Global Warming Hack #76
See what sea-level change means for the world’s coastlines and the people
who live near them.
If present trends in greenhouse gas production, deforestation, and average
surface temperature continue, it seems likely that Earth’s ice caps will con-
tinue to melt, dumping untold quantities of water back into the oceans from
whence they came and causing sea levels to rise all around the world. Of
course, the consequences of such an event would be dramatic, but what
exactly would be the result? Where would Earth’s new coastlines lie? How
many people might be affected? Questions like these can reveal the