Yes...It is a bit difficult for me, I will try to figure it out something.
I will keep you in touch if I found something out.
Best regards
Matthieu Bonventi
2015. 1. 30. 오후 8:54에 "Jody Garnett" <[email protected]>님이 작성:
> That is a good idea ... although this is probably the whole collection for
> the current bounding box. All we would have to do is be able to assign the
> result to an environment variable to complete the workflow.
>
> --
> Jody Garnett
>
> On 30 January 2015 at 08:14, Andrea Aime <[email protected]>
> wrote:
>
>> By the way, forgot one thing... there is a function that can see the
>> whole collection, it's the rendering
>> transformation one.
>> So I guess if you wanted, you could use that one to do the computation,
>> and bake directly into the
>> attributes the color you want, and then in the style you just pick the
>> color.
>>
>> See also:
>> http://docs.geoserver.org/2.5.x/en/developer/programming-guide/wps-services/implement-rendertrans.html
>>
>> Cheers
>> Andrea
>>
>>
>> On Fri, Jan 30, 2015 at 4:15 PM, Andrea Aime <
>> [email protected]> wrote:
>>
>>> On Thu, Jan 29, 2015 at 2:59 PM, Bonventi Matthieu <
>>> [email protected]> wrote:
>>>
>>>> Any idea about how I can use them ? I mean it would be cool if I could
>>>> get a max value and a min value from these function and use them as
>>>> parameter for the function which calculate and return the color.
>>>>
>>>>
>>> Not so easy though... the issue is that you cannot pass the whole
>>> feature collection to a filter function in a style,
>>> they are always fed feature by feature.
>>>
>>> Also, computing the min/max value would be rather expensive to do on a
>>> call by call basis, and would also
>>> return different values every time, because the feature collection the
>>> renderer gets is relative only
>>> to the current bbox.
>>>
>>> Long story short, it's better to pre-compute these values (against the
>>> whole dataset, and once
>>> for all).
>>> One idea that might work would be to have a GeoServer extension that
>>> computes the extrema
>>> values on the full dataset periodically, or event based, and attach them
>>> to the layer info/resource info
>>> metadata map, and then have another extension that feeds these values
>>> into the env function,
>>> for the styles to pick up at runtime.
>>> Just thinking out loud.
>>>
>>> Cheers
>>> Andrea
>>>
>>>
>>> --
>>> ==
>>> GeoServer Professional Services from the experts! Visit
>>> http://goo.gl/NWWaa2 for more information.
>>> ==
>>>
>>> Ing. Andrea Aime
>>> @geowolf
>>> Technical Lead
>>>
>>> GeoSolutions S.A.S.
>>> Via Poggio alle Viti 1187
>>> 55054 Massarosa (LU)
>>> Italy
>>> phone: +39 0584 962313
>>> fax: +39 0584 1660272
>>> mob: +39 339 8844549
>>>
>>> http://www.geo-solutions.it
>>> http://twitter.com/geosolutions_it
>>>
>>> *AVVERTENZE AI SENSI DEL D.Lgs. 196/2003*
>>>
>>> Le informazioni contenute in questo messaggio di posta elettronica e/o
>>> nel/i file/s allegato/i sono da considerarsi strettamente riservate. Il
>>> loro utilizzo è consentito esclusivamente al destinatario del messaggio,
>>> per le finalità indicate nel messaggio stesso. Qualora riceviate questo
>>> messaggio senza esserne il destinatario, Vi preghiamo cortesemente di
>>> darcene notizia via e-mail e di procedere alla distruzione del messaggio
>>> stesso, cancellandolo dal Vostro sistema. Conservare il messaggio stesso,
>>> divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od
>>> utilizzarlo per finalità diverse, costituisce comportamento contrario ai
>>> principi dettati dal D.Lgs. 196/2003.
>>>
>>>
>>>
>>> The information in this message and/or attachments, is intended solely
>>> for the attention and use of the named addressee(s) and may be confidential
>>> or proprietary in nature or covered by the provisions of privacy act
>>> (Legislative Decree June, 30 2003, no.196 - Italy's New Data Protection
>>> Code).Any use not in accord with its purpose, any disclosure, reproduction,
>>> copying, distribution, or either dissemination, either whole or partial, is
>>> strictly forbidden except previous formal approval of the named
>>> addressee(s). If you are not the intended recipient, please contact
>>> immediately the sender by telephone, fax or e-mail and delete the
>>> information in this message that has been received in error. The sender
>>> does not give any warranty or accept liability as the content, accuracy or
>>> completeness of sent messages and accepts no responsibility for changes
>>> made after they were sent or for other risks which arise as a result of
>>> e-mail transmission, viruses, etc.
>>>
>>> -------------------------------------------------------
>>>
>>
>>
>>
>> --
>> ==
>> GeoServer Professional Services from the experts! Visit
>> http://goo.gl/NWWaa2 for more information.
>> ==
>>
>> Ing. Andrea Aime
>> @geowolf
>> Technical Lead
>>
>> GeoSolutions S.A.S.
>> Via Poggio alle Viti 1187
>> 55054 Massarosa (LU)
>> Italy
>> phone: +39 0584 962313
>> fax: +39 0584 1660272
>> mob: +39 339 8844549
>>
>> http://www.geo-solutions.it
>> http://twitter.com/geosolutions_it
>>
>> *AVVERTENZE AI SENSI DEL D.Lgs. 196/2003*
>>
>> Le informazioni contenute in questo messaggio di posta elettronica e/o
>> nel/i file/s allegato/i sono da considerarsi strettamente riservate. Il
>> loro utilizzo è consentito esclusivamente al destinatario del messaggio,
>> per le finalità indicate nel messaggio stesso. Qualora riceviate questo
>> messaggio senza esserne il destinatario, Vi preghiamo cortesemente di
>> darcene notizia via e-mail e di procedere alla distruzione del messaggio
>> stesso, cancellandolo dal Vostro sistema. Conservare il messaggio stesso,
>> divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od
>> utilizzarlo per finalità diverse, costituisce comportamento contrario ai
>> principi dettati dal D.Lgs. 196/2003.
>>
>>
>>
>> The information in this message and/or attachments, is intended solely
>> for the attention and use of the named addressee(s) and may be confidential
>> or proprietary in nature or covered by the provisions of privacy act
>> (Legislative Decree June, 30 2003, no.196 - Italy's New Data Protection
>> Code).Any use not in accord with its purpose, any disclosure, reproduction,
>> copying, distribution, or either dissemination, either whole or partial, is
>> strictly forbidden except previous formal approval of the named
>> addressee(s). If you are not the intended recipient, please contact
>> immediately the sender by telephone, fax or e-mail and delete the
>> information in this message that has been received in error. The sender
>> does not give any warranty or accept liability as the content, accuracy or
>> completeness of sent messages and accepts no responsibility for changes
>> made after they were sent or for other risks which arise as a result of
>> e-mail transmission, viruses, etc.
>>
>> -------------------------------------------------------
>>
>>
>> ------------------------------------------------------------------------------
>> Dive into the World of Parallel Programming. The Go Parallel Website,
>> sponsored by Intel and developed in partnership with Slashdot Media, is
>> your
>> hub for all things parallel software development, from weekly thought
>> leadership blogs to news, videos, case studies, tutorials and more. Take a
>> look and join the conversation now. http://goparallel.sourceforge.net/
>> _______________________________________________
>> Geoserver-devel mailing list
>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/geoserver-devel
>>
>>
>
------------------------------------------------------------------------------
Dive into the World of Parallel Programming. The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is your
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net/
_______________________________________________
Geoserver-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/geoserver-devel
