[postgis-devel] PostGIS RC1/2 and QGIS

Carl Anderson carl.anderson at co.fulton.ga.us
Thu Feb 10 06:03:43 PST 2005


Carl Anderson wrote:

> the offending statement that QGIS is making is
>
> declare qgisf binary cursor for select oid,asbinary(shape,'NDR') as 
> qgs_feature_geometry from case6 where shape && 
> GeometryFromText('BOX3D(  2288006.545455   1472366.000000,  
> 2291123.454545   1475094.000000)'::box3d,102667)
>
>
it can be helped as   (drop geometryfromtext  and add setsrid )

declare qgisf binary cursor for select oid,asbinary(shape,'NDR') as 
qgs_feature_geometry from case6 where shape && setsrid('BOX3D(  
2288006.545455   1472366.000000,  2291123.454545   
1475094.000000)'::box3d,102667)

>
>
>
>
> strk at refractions.net wrote:
>
>> On Wed, Feb 09, 2005 at 08:18:42PM -0900, Gary Sherman wrote:
>>  
>>
>>> On Wed, 2005-02-09 at 10:33 +0100, strk at refractions.net wrote:
>>>   
>>>
>>>> On Tue, Feb 08, 2005 at 06:53:44PM -0900, Gary Sherman wrote:
>>>>     
>>>>
>>>>> The latest release candidates of PostGIS do not work with QGIS.
>>>>> Currently we use a binary cursor, using the asbinary function to 
>>>>> fetch
>>>>> the features. I took a quick look around and didn't find any
>>>>> documentation on the changes in lwgeom and the appropriate way to 
>>>>> read
>>>>> features.
>>>>> Can anyone point me to a document or give me a hint?
>>>>>       
>>>>
>>>> Can you give *us* an hint ? We're hunting exactly this bug. Reports 
>>>> are multipolygons
>>>> work while polygons don't. Can you confirm this ?
>>>> Can you provide sample data exploiting the bug ?
>>>>     
>>>
>>> I am unable to display any data type (point, linestring, polygon, or
>>> multipolygon) in QGIS.
>>>
>>> I have not had time to step through the source in debug to determine 
>>> the
>>> problem. A dump file of one of the polygon layers used for testing is
>>> available at http://qgis.org/lakes_dump.dmp.bz2 (this was dumped with
>>> the -d option).
>>>
>>> -gary
>>>   
>>
>>
>> Thank you gary. I've tested your data against the wkbtester prog
>> attached in my previous mail. It reports no difference between HWGEOM
>> binary cursor and LWGEOM binary cursor !
>>
>> The program opens a binary cursor for:
>> asbinary(force_2d(force_collection(geom))), does qgis do the same ?
>>
>> --strk;
>>
>>  
>>
>>>
>>>
>>>
>>>   
>>
>>
>>
>>
>>  
>>
>>> _______________________________________________
>>> postgis-devel mailing list
>>> postgis-devel at postgis.refractions.net
>>> http://postgis.refractions.net/mailman/listinfo/postgis-devel
>>>   
>>
>>
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>>
>
>


-- 
Carl Anderson
GIS Manager Fulton County, Georgia
carl.anderson at co.fulton.ga.us
404.730.8026



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