[postgis-users] tile size

[Stephen Crawford]

Mostly map algebra, doing a mean or sum over 7 rasters, etc.  Possibly 
clipping to state borders at final step.  Is 100 x 100 too small?

Thanks,
Steve

On 5/2/2012 11:12 AM, Pierre Racine wrote:
> Depends on what you want to do:
>
> Raster/vector analysis in vector space (with ST_Intersection(geometry, raster)): smaller is better
>
> Raster/vector analysis in raster space (with ST_Clip or ST_Intersection(raster, raster)): tile approximately the size of polygons is better
>
> No analysis: depends on your application.
>
> Pierre
>
>> -----Original Message-----
>> From: postgis-users-bounces at postgis.refractions.net [mailto:postgis-users-
>> bounces at postgis.refractions.net] On Behalf Of Stephen Crawford
>> Sent: Wednesday, May 02, 2012 11:04 AM
>> To: PostGIS Users Discussion
>> Subject: [postgis-users] tile size
>>
>> Is there any rule of thumb for choosing a tile size for a raster?  I
>> have a grid that is 2145 x 1377
>>
>> Thanks,
>> Steve
>>
>> --
>> Stephen Crawford
>> Center for Environmental Informatics
>> The Pennsylvania State University
>>
>>
>>
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-- 
Stephen Crawford
Center for Environmental Informatics
The Pennsylvania State University
src176 at psu.edu
814.865.9905