[Gvsig_english] WCS

[Buchholz, Robert]

 Dear gvSIG mailing list,
I forward this posting from the Mapbender mailinglist, because it might be interesting to you as well.
Maybe for the developrers (respect!) this might be another field of action to the roadmap.
Simply the best,
Robert

Some comments / discussions are highly wanted!

-----Ursprüngliche Nachricht-----
Von: mapbender_users-bounces at lists.osgeo.org [mailto:mapbender_users-bounces at lists.osgeo.org] Im Auftrag von Arnulf Christl (WhereGroup)
Gesendet: Montag, 14. April 2008 20:50
An: Mapbender User List
Betreff: Re: AW: [Mapbender-users] WCS_in_Mapbender


On Mon, April 14, 2008 10:51, Buchholz, Robert wrote:
> Hey Arnulf,
>
>
> i really want to know the philosophy of WCS to understand the 
> advantages and possabilities of WCS. As one application i assume a 
> supervised /unsupervised classification on a rasterimage i.e. to find 
> out about percentage of landuses (waterbodies, forest, 
> agriculture...). gvSIG can only load WCS and give pointbased 
> information concerning the RGB code (Value on x-y coordinate = 33).
> My hope is to apply algorythms to find all similar values (better 
> ranges of values 22 to 44) an put them in one class together. Maybe 
> then find out the area covered by this value/ class and set this in 
> relation to 100%.
> Theoretically possible by a "fat client"!??? But afaik not by gvSIG at 
> present. Does someone knows one free fat client providing such abilities?
>
>
> Additionally what other abilities are assumed to use a WCS?
> Can I set a  browserbased request like
> http://www.server/service/...?service=wcs&version=1.0.0&band=2&value=22-4
> 4    ?
> If yes, what would I get? an image only with the points having this 
> value or a xml/gml containing the x/y coordinates with the values 22 
> to 44? If none of this I do not see big advantages to install a WCS, 
> while WMS and WFS supports most needs of GIS applicators except of 
> image classification.
>
> But maybe some of this is nonsence, because my need will be only 
> supported and realised by WPS (Web Processing Service) like presentet 
> at FOSSGIS 2008.
> Then my question is related to WPS, but with +/- the same objectives.
>
>
> Best wishes,
> Robert

Robert,
this is a good summary. Maybe you should forward this to the gvSIG mailing list or check with their roadmap, maybe it is already planned. They are keen on finding new area of work so chances are good that you can get them interested.

The traditional place to look for this kind of processing would be GRASS.
This is their primary domain although I believe that they did not catch up on OGC WCS yet - but this is only guessing.

And then - as you said, this will be an interesting field of work for processing services but currently this is all still beta. Ominoverde (Lorenzo Becchi) still calls it in an "embrio" state... :-)

Best regards,
Arnulf.

> -----Ursprüngliche Nachricht-----
> Von: mapbender_users-bounces at lists.osgeo.org
> [mailto:mapbender_users-bounces at lists.osgeo.org] Im Auftrag von Arnulf 
> Christl
> Gesendet: Sonntag, 13. April 2008 21:23
> An: Mapbender User List
> Betreff: Re: [Mapbender-users] WCS_in_Mapbender
>
>
>
> On Tue, April 8, 2008 15:45, Buchholz, Robert wrote:
>
>> Hello List,
>> this is a new member interested in WCS. I found a WCS example at gvSIG.
>> URL:
>> http://inspire.cop.gva.es/mapserver/wcs
>> (Quickbird 2004, several images)
>> I did test the Valencia-Sueca Layer- It works.
>> Questions:
>> -Does someone knows an application (maybe Mapbender) that is able to 
>> support classification on that layer? -What other functionalities are 
>> assumed to be supported by WCS?
>>
>> Thanks for any hints and ideas,
>> Robert Buchholz
>>
>
> Hi Robert,
> could sketch a business case for using WCS in Mapbender? I believe 
> that you would probably rather use a fat client like gvSIG to further 
> process the Coverage provided by a WCS but maybe I just don't get what 
> it is that you want to do?!
>
> Best regards,
> Arnulf.
>
>
> --
> Arnulf Christl
> http://www.wheregroup.com
>
>
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> Mapbender_users at lists.osgeo.org
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>
>


--
With best regards,
Arnulf Christl
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