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=== Load Maps
.Load Maps Window
image::load-maps.png[width="5.2in"]
Before heading out to a new launch site, you can use
this to load satellite images in case you don't have
internet connectivity at the site. Try not to wait
until the last minute, though, particularly if you're
heading to a major launch. If too many people are
all trying to download map data at once, Google may
limit access until the next day.
There's a drop-down menu of launch sites we know
about; if your favorites aren't there, please let us
know the lat/lon and name of the site. The contents of
this list are actually downloaded from our server at
run-time, so as new sites are sent in, they'll get
automatically added to this list. If the launch site
isn't in the list, you can manually enter the lat/lon
values
There are four different kinds of maps you can view;
you can select which to download by selecting as many
as you like from the available types:
Hybrid::
A combination of satellite imagery and road data. This
is the default view.
Satellite::
Just the satellite imagery without any annotation.
Roadmap::
Roads, political boundaries and a few geographic
features.
Terrain::
Contour intervals and shading that show hills and
valleys.
You can specify the range of zoom levels to download;
smaller numbers show more area with less
resolution. The default level, 0, shows about
3m/pixel. One zoom level change doubles or halves that
number. Larger zoom levels show more detail, smaller
zoom levels less.
The Map Radius value sets how large an area around the
center point to download. Select a value large enough
to cover any plausible flight from that site. Be aware
that loading a large area with a high maximum zoom
level can attempt to download a lot of data. Loading
hybrid maps with a 10km radius at a minimum zoom of -2
and a maximum zoom of 2 consumes about 120MB of
space. Terrain and road maps consume about 1/10 as
much space as satellite or hybrid maps.
Clicking the 'Load Map' button will fetch images from
Google Maps; note that Google limits how many images
you can fetch at once, so if you load more than one
launch site, you may get some gray areas in the map
which indicate that Google is tired of sending data to
you. Try again later.
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