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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Comic Sans MS"">Paul,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Comic Sans MS"">We’ve been building these here at the City for a number of years now. Using a halving of resolution for each new level.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Comic Sans MS"">Generally, the space requirements will end up at approximately 1.333 times the size of the original data. Assuming you aren’t trying to interpolate pixels at the bottom level of
course. Also, the bottom level should be roughly equal in size to the original data being tiled, since the data isn’t really changing, but rather only being chunked up into smaller pieces. Each new level decreases in size to approximately 1/4<sup>th</sup>
the previous with regard to tile numbers, and the individual tiles will be roughly the same size across all levels of the pyramid.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Comic Sans MS"">Bobb<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> geomoose-users-bounces@lists.osgeo.org [mailto:geomoose-users-bounces@lists.osgeo.org]
<b>On Behalf Of </b>Paul Wickman<br>
<b>Sent:</b> Monday, January 28, 2013 6:53 PM<br>
<b>To:</b> geomoose-users@lists.osgeo.org<br>
<b>Subject:</b> [Geomoose-users] Estimating tile size<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Greetings,<o:p></o:p></p>
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<p class="MsoNormal">I know this type of question goes around often in various flavors. Difficult to estimate exact size of rendered tiles, but thought I'd try to get some opinions.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I see this questions asked in a variety of ways and I know it's not exactly precise on how to get the answer, but I'll throw my question out to see what I get ;)<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">We have a client who would like us to tile and serve up high-resolution aerial photography that they own. The area is about 800 square miles and the imagery is 6-inch resolution. They'd like to be able to view the imagery at zoom levels
11 through 20 (with level 20 being 1 pixel=6 inches). Is there any way at all to determine how large a resulting raster tile set might be?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Many thanks,<o:p></o:p></p>
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<p class="MsoNormal"> Paul<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-- <br>
Paul Wickman<br>
CTO | Flat Rock Geographics<br>
612.280.5850 | <a href="mailto:paul@flatrockgeo.com" target="_blank">paul@flatrockgeo.com</a><br>
<a href="http://www.flatrockgeo.com" target="_blank">www.flatrockgeo.com</a> | <a href="http://twitter.com/flatrockgeo" target="_blank">
twitter.com/flatrockgeo</a> <o:p></o:p></p>
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