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section-raster-to-vector.html
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<!DOCTYPE html>
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<title>map school: Raster to Vector: a free introduction to geo</title>
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<h1><a href='./'>map school: Raster to Vector</a></h1>
<p>a free introduction to geo.</p>
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<p>Likewise, raster data can be vectorized in a number of ways. On raster satellite images of the earth, people draw, or 'trace', lines for streets, points for houses, or polygons for buildings. This lets us have a version of the data upon which we can do more things - you can figure out driving routes from vector data of streets, but can't do that with a satellite image of streets.</p>
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