[postgis-devel] Contributing code to PostGIS Raster

Jorge Arévalo jorge.arevalo at deimos-space.com
Wed Mar 23 16:15:35 PDT 2011


On Wed, Mar 23, 2011 at 11:56 PM, David Zwarg <dzwarg+postgis at azavea.com> wrote:
> 2011/3/23 Jorge Arévalo <jorge.arevalo at deimos-space.com>
>>
>> On Wed, Mar 23, 2011 at 4:30 PM, Pierre Racine
>> <Pierre.Racine at sbf.ulaval.ca> wrote:
>> >>Yes, I think it's the best way. A generic ST_AsGDALRaster and several
>> >>wrappers around it.
>> >
>> > Was there anything implemented yet? Could Bborie take over? So you could
>> > focus on the GDAL driver (and tickets)?
>> >
>>
>> rt_raster_dump_as_wktpolygons transform a PostGIS Raster in a GDAL
>> Raster using VRT driver. This is the closest implemented reference for
>> Bborie right now, I think.
>>
>
> Hello,
>
> I filed some additional information in #870 about
> rt_raster_dump_as_wktpolygons. It specifically will speed up the dual loops
> inside of that function, and reduce the number of features created and
> destroyed.
>
> It would be worth investigating that approach before using the current
> method as a template of other functions.
>
> Thanks,
> David
>
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>

Hi David,

You're right. Your suggestion is a good point to improve the function.
I'll work on it the next two days, before working on #851. Bborie,
when will you be able to start working?

Best regards,

-- 
Jorge Arévalo
Internet & Mobilty Division, DEIMOS
jorge.arevalo at deimos-space.com
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