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section-raster-formats.html
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<!DOCTYPE html>
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<title>mapschool: Raster Formats: a free introduction to geo</title>
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<h1><a href='./'>mapschool: Raster Formats</a></h1>
<p>a free introduction to geo.</p>
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<p>Raster formats aim to compact data and make it accessible fast for analysis and display. Some of them are geospatially-enabled versions of common image formats, <a href="http://trac.osgeo.org/geotiff/">GeoTIFF</a> and JPEG2000.</p>
<p>Internally, raster data formats manage two tasks - packing data into pixels, and then storing the relationship between those pixels and actual places on the globe - the 'extent' of the data.</p>
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