[Context.RWG] [webmap-discuss] RE: Using OWS Context to describe GML/WFS layers whichdecimate

[Cameron Shorter]

I plan to deliver Mapbuilder with the majority of the functionality in 
mid Novemeber, however I have budget until early December which I can 
use to tweak the application.

Ideally I'd like to have an idea of how the group functionality is 
structured by the end of next week.

Kralidis,Tom [Burlington] wrote:
> Cameron,
> 
> What are your timelines for OWS4?  I'd like to get a 0.0.14 OWSContext
> up on the twiki before the San Diego TC meetings in December. 
> 
> 
>>-----Original Message-----
>>From: 
>>context.rwg-bounces+tom.kralidis=ec.gc.ca at opengeospatial.org 
>>[mailto:context.rwg-bounces+tom.kralidis=ec.gc.ca at opengeospati
>>al.org] On Behalf Of Cameron Shorter
>>Sent: 01 November, 2006 1:01 AM
>>To: webmap-discuss at mail.osgeo.org
>>Cc: context.rwg at opengeospatial.org; Martin Daly; Raj Singh
>>Subject: Re: [Context.RWG] [webmap-discuss] RE: Using OWS 
>>Context to describe GML/WFS layers whichdecimate
>>
>>Tom,
>>Yes using groups would work.
>>
>>Do you expect to have a proposed schema with the group tag 
>>included in time for me to use it in the OWS4?
>>
>>Kralidis,Tom [Burlington] wrote:
>>
>>> 
>>>
>>>
>>>
>>>>-----Original Message-----
>>>>From: Cameron Shorter [mailto:cameron.shorter at gmail.com]
>>>>Sent: 31 October, 2006 7:17 PM
>>>>To: Kralidis,Tom [Burlington]
>>>>Cc: Martin Daly; context.rwg at opengeospatial.org; 
>>>>webmap-discuss at mail.osgeo.org; Raj Singh
>>>>Subject: Re: [Context.RWG] Using OWS Context to describe GML/WFS 
>>>>layers whichdecimate
>>>>
>>>>Kralidis,Tom [Burlington] wrote:
>>>>
>>>>
>>>>>Cameron,
>>>>>
>>>>>So you want one OWSContext FeatureType to hold many GML documents?
>>>>>
>>>>>If yes, can you not define each GML doc as an OWSContext
>>>>
>>>>FeatureType,
>>>>
>>>>
>>>>>each with respective scale rules?
>>>>
>>>>Tom,
>>>>Using Style scale rules to make a layer visible or not would be one 
>>>>solution - but with a number of limitations:
>>>>1. If I were to build a LayerList (or Legend) from the 
>>
>>Context, would 
>>
>>>>I end up with a layer for each scale?
>>>>
>>>
>>>
>>>Yes, however you could build your client Legend handler to 
>>
>>show layers 
>>
>>>only if they're within the scale range of where the 
>>
>>application scale 
>>
>>>is at.
>>>
>>>
>>>
>>>>2. If my legend was smart, and layers were only visible at certain 
>>>>resolutions, how do I associate a HighResolutionLayer with a 
>>>>LowResolutionLayer so that the Layer attributes (like
>>>>visibility) can be associated between layers.
>>>>
>>>
>>>
>>>If OWSContext identified the notion of a @group attribute 
>>
>>as part of 
>>
>>>the AbstractResourceType, this might be an option.  There has been 
>>>some mild discussion on this front.
>>>
>>>
>>>
>>>
>>>>>
>>>>>
>>>>>
>>>>>>-----Original Message-----
>>>>>>From: Cameron Shorter [mailto:cameron.shorter at gmail.com]
>>>>>>Sent: 30 October, 2006 7:29 PM
>>>>>>To: Martin Daly
>>>>>>Cc: context.rwg at opengeospatial.org; Kralidis,Tom [Burlington]; 
>>>>>>webmap-discuss at mail.osgeo.org; Raj Singh
>>>>>>Subject: Re: [Context.RWG] Using OWS Context to describe GML/WFS 
>>>>>>layers whichdecimate
>>>>>>
>>>>>>Martin,
>>>>>>Point taken regarding G/Y/M maps. Replace zoomLevel with 
>>>>>>sld:Min/MaxScaleDenominator in my previous comment.
>>>>>>
>>>>>>I still need to reference different GML sources for each layer 
>>>>>>depending on scale, which doesn't seem to be covered by 
>>
>>OWS Context 
>>
>>>>>>yet.
>>>>>>
>>>>>>
>>>>>>Martin Daly wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>>>zoomLevel is a term used by Google/Yahoo/MSN Maps.
>>>>>>>>It is a measure of resolution. As you zoom out, the zoomLevel 
>>>>>>>>increases.
>>>>>>>
>>>>>>>
>>>>>>>That is not a definition that will wash in a standard that
>>>>
>>>>aims for
>>>>
>>>>
>>>>>>>interoperability.
>>>>>>>
>>>>>>>In fact, OWS Context already uses
>>>>
>>>>sld:Min/MaxScaleDenominator in the
>>>>
>>>>
>>>>>>>AbstractResourceType, so the capability already exists.
>>>>>>>
>>>>>>>As with the previous long e-mail trail re. GYM data, this
>>>>>>
>>>>>>spec. should
>>>>>>
>>>>>>
>>>>>>
>>>>>>>leverage de jure OGC standards, not de facto ones that
>>>>>>
>>>>>>large parts of
>>>>>>
>>>>>>
>>>>>>
>>>>>>>the target audience cannot use.
>>>>>>>
>>>>>>>M
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>>--
>>>>>>Cameron Shorter
>>>>>>http://cameron.shorter.net
>>>>>>
>>>>>
>>>>>
>>>>--
>>>>Cameron Shorter
>>>>http://cameron.shorter.net
>>>>
>>>
>>>
>>>
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>>
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>>>
>>>
>>
>>
>>--
>>Cameron Shorter
>>http://cameron.shorter.net
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>>
> 
> 


-- 
Cameron Shorter
http://cameron.shorter.net