[postgis-devel] Add-DropOverviewConstraints are not documented

Jose Carlos Martinez Llario jomarlla at cgf.upv.es
Wed Mar 7 13:48:18 PST 2012


Hi, yes that is what I meant.

Using ST_resample I can manage my own spatial raster tables to make 
overviews.
Then next step will be to use addrasterconstrains and 
addoverviewconstraints.

Am I missing something?
If not, we dont need these functions to be documented?



On 07/03/2012 22:46, dustymugs wrote:
> Jose,
>
> I don't believe there is a function yet for generating overviews from 
> an existing raster layer.  You can do something like it though using 
> ST_Resample(ST_Union(...)).
>
> (Add|Drop)OverviewContraints is for applying the flags/constraints 
> that indicate a raster column as an overview of another table.
>
> -bborie
>
> On 03/07/2012 01:35 PM, Jose Carlos Martinez Llario wrote:
>> Hi,
>> If one want to make an overview from an already existing raster layer I
>> guess we should use AddOverviewConstraints.
>>
>> Should AddOverviewConstraints and DropOverviewConstraints be documented?
>>
>> Best,
>> Jose
>>
>>
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