Mapping Hacks

by Schuyler Erle, Rich Gibson and Jo Walsh

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LandSat-7 Compositing HOWTO

February 21st, 2005 by Schuyler

Our good friend Abhijit Menon-Sen has
compiled a pretty thorough guide to compositing your own LandSat-7
scenes
from the raw spectral layers available from the Global Land Cover Facility. We used similar
techniques to make the composites used in our fly-over of Bilbao and as a
backdrop to the London Free
Map
demo.

As an aside, if you don’t want to go the trouble of making your own LandSat
composites, you can always get composited images on the fly from NASA’s OnEarth server (assuming it hasn’t
been hammered by all those WorldWind fans). We used their Web Mapping Service
to provide the satellite imagery background to our Vector
Map of the World
demo (though you have to zoom in to get to the LandSat
imagery itself).

Posted in landsat |

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