June 2005
Intermediate to advanced
568 pages
24h 7m
English
Content preview from Mapping Hacks
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Explore a 3-D Model of the Entire World #24
Chapter 3, Mapping Your World
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Exploring the Available Data Sets
World Wind has many data sets you can play with:
Blue Marble
The textured globe you see when you start the application.
Landsat 7
The default data set when you zoom in. The resolution of Landsat 7 is
15 meters per pixel. There are two varieties, normal and “pseudo,”
which is a false color map produced using the infrared bands in Land-
sat imagery.
Shuttle Radar Topography Mission (SRTM)
Digital elevation data for a given area. If you tilt the view by holding
down the right mouse button and moving the mouse, you will be able to
see mountains and valleys.
USGS/Terraserver 1 meter
The Terraserver images are the highest-detail maps World Wind can use
at the moment. With these, you can see cars and swimming pools.
Figure 3-11. World Wind’s startup view
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Chapter 3, Mapping Your World
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USGS Topo
These are the traditional hand-drawn USGS contour maps of a given area.
These data sets are activated by the icons across the top of the application,
as shown in Figure 3-11. They can also be manipulated by the Layer Man-
ager, by going to Tools
➝ Layer Manager.
There are three specialty data sets that World Wind can use as well:
MODIS
NASA’s MODIS satellite ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.