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

[Kralidis,Tom [Burlington]]

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