[gdal-dev] ogr option-spat

[Frank Warmerdam]

Guillaume Sueur wrote:
> Weird to say why it doesn't work when you don't know yourself what it
> should really do...
> 
> This option (and not function) is designed to extract a specific extent
> of your input data when using ogr2ogr.
> 
> Actually it SHOULD work as I use it really often. Check your
> data/values/result, and provide more precise test case if it doesn't.

Folks,

The only thing I might add is that -spat does not actually clip
the returned geometries.  It returns all features whose geometries
touch the selection region but it returns the geometries intact, not
clipped.

Lionel, I think you will need to supply a specific example that
is not working for us to followup.  I will say that the spatial
filtering is done by the individual driver and there is always the
chance that some drivers do not do it properly.

Best regards,

> GOUBET LIONEL a écrit :
>> Hi,
>>
>>  
>>
>> How use the options –spat XMIN YMIN XMAX YMAX ?
>>
>>  
>>
>> I try but it doesn’t work … All data layer is returned (same if I add in
>> a table these columns).
>>
>> What’s the problem ? What’s the utility of this focntion ?
>>
>>  
>>
>> Thanks you
>>
>>
>>
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>>
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> 


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