On 16/07/2010, at 6:31 PM, Mark Payne wrote:
> So far I tried the following:
>
> featureSource = ds.getFeatureSource(FEATURE_TYPE_NAME);
> DefaultQuery query = new DefaultQuery(DefaultQuery.ALL);
> Hints hints = new Hints(Hints.COORDINATE_DIMENSION, new Integer(3),
> Hints.FEATURE_2D, Boolean.FALSE);
> query.setHints(hints);
> featureCollection = featureSource.getFeatures(query);
>
> That was the kind of thing you were meaning?
Yeah it is.
Reading the FEATURE_2D javadocs does not provide much hope - the hints seems to
be to downgrade 3D data to 2D for display.
Request that the features returned by the feature collections should be
2D only. Can be used to prevent the request of the third ordinate when only two
are going to be used.
> I tried the hints that seemed the most likely from the list that the Hints
> object provides. Unfortunately it doesn't seem to make a difference, I just
> get features with the X,Y components as before. Does anyone know if I'm on
> the right track, or do I need to provide a different
> CoordinateSequenceFactory as well?
It sounds like you are at the bleeding edge; it is probably time to step into
the code and see what is being done. You could at leas confirm if the EWKB
reader supports the creation of these geometries.
Jody
>
> Mark
>
> On 14/07/10 15:20, Jody Garnett wrote:
>> We had some hints to try and pull down additional ordinates for working with
>> 3D data. Check Query Hints for the constant used.
>>
>> Jody
>>
>> On 13/07/2010, at 11:08 PM, Mark Payne wrote:
>>
>>
>>> Hi all,
>>>
>>> I have a PostGIS database in which all the geometries are 4D (XYZM)
>>> although the CRS is 2D as is commonly the case. I create a PostGIS data
>>> store and use it to extract features from the database, but I find that
>>> it only retrieves the X and Y components. The Z component is always set
>>> to NaN. Does anyone know if there is a way of forcing the data store to
>>> include the Z value?
>>>
>>> Thanks
>>>
>>> --
>>> Mark Payne
>>> Development Engineer
>>>
>>> Tel: +44 (0) 131 447 4200 Address: SeeByte Ltd.
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>>
>
>
> --
> Mark Payne
> Development Engineer
>
> Tel: +44 (0) 131 447 4200 Address: SeeByte Ltd.
> Support Tel: +44 (0) 131 510 4200 Level 7, Orchard Brae House
> USA Tel (UK Hours): +1 (619) 241 4393 30 Queensferry Road
> Fax: +44 (0) 131 447 4911 Edinburgh, EH4 2HS
> Web: http://www.seebyte.com Scotland, UK
>
> | This message is confidential and may be privileged. If it is
> | not for you please inform us then delete it. If the content is
> | not about the business of the company or its clients then the
> | message is neither from nor sanctioned by SeeByte Limited which is
> | a company registered in Scotland (reg. number SC194014) with its
> | registered office at the address stated above.
>
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