65 lines
2.2 KiB
HTML
65 lines
2.2 KiB
HTML
=== Load Maps
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.Load Maps Window
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image::load-maps.png[width=500]
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Before heading out to a new launch site, you can use
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this to load satellite images in case you don't have
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internet connectivity at the site. Try not to wait
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until the last minute, though, particularly if you're
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heading to a major launch. If too many people are
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all trying to download map data at once, Google may
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limit access until the next day.
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There's a drop-down menu of launch sites we know
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about; if your favorites aren't there, please let us
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know the lat/lon and name of the site. The contents of
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this list are actually downloaded from our server at
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run-time, so as new sites are sent in, they'll get
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automatically added to this list. If the launch site
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isn't in the list, you can manually enter the lat/lon
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values
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There are four different kinds of maps you can view;
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you can select which to download by selecting as many
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as you like from the available types:
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Hybrid::
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A combination of satellite imagery and road data. This
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is the default view.
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Satellite::
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Just the satellite imagery without any annotation.
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Roadmap::
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Roads, political boundaries and a few geographic
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features.
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Terrain::
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Contour intervals and shading that show hills and
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valleys.
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You can specify the range of zoom levels to download;
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smaller numbers show more area with less
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resolution. The default level, 0, shows about
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3m/pixel. One zoom level change doubles or halves that
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number. Larger zoom levels show more detail, smaller
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zoom levels less.
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The Map Radius value sets how large an area around the
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center point to download. Select a value large enough
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to cover any plausible flight from that site. Be aware
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that loading a large area with a high maximum zoom
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level can attempt to download a lot of data. Loading
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hybrid maps with a 10km radius at a minimum zoom of -2
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and a maximum zoom of 2 consumes about 120MB of
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space. Terrain and road maps consume about 1/10 as
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much space as satellite or hybrid maps.
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Clicking the 'Load Map' button will fetch images from
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Google Maps; note that Google limits how many images
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you can fetch at once, so if you load more than one
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launch site, you may get some gray areas in the map
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which indicate that Google is tired of sending data to
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you. Try again later.
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