[Geomoose-users] Estimating tile size

[Brent Fraser]

Do you mean how many bytes?

Looking at my Landsat tile pyramids (levels 4 to 12), they're about the 
same number of bytes (hmm, I expected them to be double...)

But my source images:
     - no compression on existing files (tiffs, e.g not jpeg)
     - 3 band (color) imagery

The resulting tiles:
     - compressed PNGs
     - four bands (one alpha channel for transparency)

So  my guess is somewhere between "same size" to "double the number of 
bytes" (unless the source imagery is compressed, then it will be 5 to 10 
times larger)

Best Regards,
Brent Fraser

On 1/28/2013 5:53 PM, Paul Wickman wrote:
> Greetings,
>
> 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.
>
> 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 ;)
>
> 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?
>
> Many thanks,
>   Paul
>
> -- 
> Paul Wickman
> CTO | Flat Rock Geographics
> 612.280.5850 | paul at flatrockgeo.com <mailto:paul at flatrockgeo.com>
> www.flatrockgeo.com <http://www.flatrockgeo.com> | 
> twitter.com/flatrockgeo <http://twitter.com/flatrockgeo>
>
>
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