[Geoserver-devel] Image width and height to vectoral plugin

GeoServer GeoServer Developer
1

Hello list,

I have developed a plugin which is reading multiple files in a directory for a map format on GeoServer. Because there are lots of file and also overlapping files, i need to choose best maps that fits to current user view. I have developed a map selection algorithm for this purpose. A heuristic in this algorithm needs image width and height from the supplied WMS parameters, so how can i pass these parameters to my vector plugin, i couldn’t find a resource which will help me.

Thank you very much in advance.

2

Ciao Yasin,
please, find my answer inline below....

Regards,
Simone Giannecchini

GeoServer Professional Services from the experts! Visit
http://goo.gl/NWWaa2 for more information.

Ing. Simone Giannecchini
@simogeo
Founder/Director

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 333 8128928

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

-------------------------------------------------------
AVVERTENZE AI SENSI DEL D.Lgs. 196/2003
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The information in this message and/or attachments, is intended solely
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Data Protection Code).Any use not in accord with its purpose, any
disclosure, reproduction, copying, distribution, or either
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On Mon, Feb 16, 2015 at 9:07 AM, yasin motcu <yasinmotcu@anonymised.com> wrote:

Hello list,

I have developed a plugin which is reading multiple files in a directory for
a map format on GeoServer. Because there are lots of file and also
overlapping files, i need to choose best maps that fits to current user
view. I have developed a map selection algorithm for this purpose. A
heuristic in this algorithm needs image width and height from the supplied
WMS parameters, so how can i pass these parameters to my vector plugin, i
couldn't find a resource which will help me.

Well, you are not providing much information in this email.
- What kind of plugin are we talking about?
- Is it a DataStore a CoverageStore?
- Waht kind of data are we talking about? Raster? Vector?

Thank you very much in advance.

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3

Ciao Simone,

Thank you for your response and sorry for incomplete information. It is a vectoral plugin like shapefile that implements DataStore api, and the data itself is vectoral which is s57/s63 data. In fact, after i wrote my message, i have found a way. I took ScreenMap object from hints, and access its private width and height fields via reflection. But still I don’t know if there is a legal way to pass -user requested WMS- width and height parameters to this plugin.

Regards,
Yasin

On Feb 20, 2015 11:58 AM, “Simone Giannecchini” <simone.giannecchini@anonymised.com> wrote:

Ciao Yasin,
please, find my answer inline below…

Regards,
Simone Giannecchini

GeoServer Professional Services from the experts! Visit
http://goo.gl/NWWaa2 for more information.

Ing. Simone Giannecchini
@simogeo
Founder/Director

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 333 8128928

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.

On Mon, Feb 16, 2015 at 9:07 AM, yasin motcu <yasinmotcu@anonymised.com> wrote:

Hello list,

I have developed a plugin which is reading multiple files in a directory for
a map format on GeoServer. Because there are lots of file and also
overlapping files, i need to choose best maps that fits to current user
view. I have developed a map selection algorithm for this purpose. A
heuristic in this algorithm needs image width and height from the supplied
WMS parameters, so how can i pass these parameters to my vector plugin, i
couldn’t find a resource which will help me.

Well, you are not providing much information in this email.

  • What kind of plugin are we talking about?
  • Is it a DataStore a CoverageStore?
  • Waht kind of data are we talking about? Raster? Vector?

Thank you very much in advance.

Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
from Actuate! Instantly Supercharge Your Business Reports and Dashboards
with Interactivity, Sharing, Native Excel Exports, App Integration & more
Get technology previously reserved for billion-dollar corporations, FREE
http://pubads.g.doubleclick.net/gampad/clk?id=190641631&iu=/4140/ostg.clktrk

Geoserver-devel mailing list
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4

Ciao Yasin,
I believe you should probably code the plugin as a coverage plugin if
it generates an image in the output regardless of the fact that the
underlying data is vector.
Datastore should not have (but I might be wrong here) any notion of
screen resolution as it wrap DBMS like api. I know there should be
some hints but it should no be supposed to know exactly the W and H
params for the GetMap request.

Regards,
Simone Giannecchini

GeoServer Professional Services from the experts! Visit
http://goo.gl/NWWaa2 for more information.

Ing. Simone Giannecchini
@simogeo
Founder/Director

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 333 8128928

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.

On Fri, Feb 20, 2015 at 12:27 PM, yasin motcu <yasinmotcu@anonymised.com> wrote:

Ciao Simone,

Thank you for your response and sorry for incomplete information. It is a
vectoral plugin like shapefile that implements DataStore api, and the data
itself is vectoral which is s57/s63 data. In fact, after i wrote my message,
i have found a way. I took ScreenMap object from hints, and access its
private width and height fields via reflection. But still I don't know if
there is a legal way to pass -user requested WMS- width and height
parameters to this plugin.

Regards,
Yasin

On Feb 20, 2015 11:58 AM, "Simone Giannecchini"
<simone.giannecchini@anonymised.com> wrote:

Ciao Yasin,
please, find my answer inline below....

Regards,
Simone Giannecchini

GeoServer Professional Services from the experts! Visit
http://goo.gl/NWWaa2 for more information.

Ing. Simone Giannecchini
@simogeo
Founder/Director

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 333 8128928

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.

On Mon, Feb 16, 2015 at 9:07 AM, yasin motcu <yasinmotcu@anonymised.com> wrote:
> Hello list,
>
> I have developed a plugin which is reading multiple files in a directory
> for
> a map format on GeoServer. Because there are lots of file and also
> overlapping files, i need to choose best maps that fits to current user
> view. I have developed a map selection algorithm for this purpose. A
> heuristic in this algorithm needs image width and height from the
> supplied
> WMS parameters, so how can i pass these parameters to my vector plugin,
> i
> couldn't find a resource which will help me.

Well, you are not providing much information in this email.
- What kind of plugin are we talking about?
- Is it a DataStore a CoverageStore?
- Waht kind of data are we talking about? Raster? Vector?

>
> Thank you very much in advance.
>
>
>
> ------------------------------------------------------------------------------
> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
> with Interactivity, Sharing, Native Excel Exports, App Integration &
> more
> Get technology previously reserved for billion-dollar corporations, FREE
>
> http://pubads.g.doubleclick.net/gampad/clk?id=190641631&iu=/4140/ostg.clktrk
> _______________________________________________
> Geoserver-devel mailing list
> Geoserver-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/geoserver-devel
>

5

Ciao Simone,

No this is not a coverage plugin, it is completely vectoral. The problem is here that there are lots of s57 files belonging to one SimpleFeatureType in datastore directory, not just one file. And i should select most appropriate files (for intance first 5 or 6 files for each WMS request) to render, so GeoServer reads features from the selected files. So to select these appropriate files, i should know current scale value, and to calculate ogc scale value i should know width and height. That is why i need it. Anyway this solution seems to solve my problem. Thank you for your response.

Regars
Yasin

On Feb 20, 2015 1:31 PM, “Simone Giannecchini” <simone.giannecchini@anonymised.com> wrote:

Ciao Yasin,
I believe you should probably code the plugin as a coverage plugin if
it generates an image in the output regardless of the fact that the
underlying data is vector.
Datastore should not have (but I might be wrong here) any notion of
screen resolution as it wrap DBMS like api. I know there should be
some hints but it should no be supposed to know exactly the W and H
params for the GetMap request.

Regards,
Simone Giannecchini

GeoServer Professional Services from the experts! Visit
http://goo.gl/NWWaa2 for more information.

Ing. Simone Giannecchini
@simogeo
Founder/Director

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 333 8128928

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.

On Fri, Feb 20, 2015 at 12:27 PM, yasin motcu <yasinmotcu@anonymised.com> wrote:

Ciao Simone,

Thank you for your response and sorry for incomplete information. It is a
vectoral plugin like shapefile that implements DataStore api, and the data
itself is vectoral which is s57/s63 data. In fact, after i wrote my message,
i have found a way. I took ScreenMap object from hints, and access its
private width and height fields via reflection. But still I don’t know if
there is a legal way to pass -user requested WMS- width and height
parameters to this plugin.

Regards,
Yasin

On Feb 20, 2015 11:58 AM, “Simone Giannecchini”
<simone.giannecchini@anonymised.com> wrote:

Ciao Yasin,
please, find my answer inline below…

Regards,
Simone Giannecchini

GeoServer Professional Services from the experts! Visit
http://goo.gl/NWWaa2 for more information.

Ing. Simone Giannecchini
@simogeo
Founder/Director

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 333 8128928

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.

On Mon, Feb 16, 2015 at 9:07 AM, yasin motcu <yasinmotcu@anonymised.com> wrote:

Hello list,

I have developed a plugin which is reading multiple files in a directory
for
a map format on GeoServer. Because there are lots of file and also
overlapping files, i need to choose best maps that fits to current user
view. I have developed a map selection algorithm for this purpose. A
heuristic in this algorithm needs image width and height from the
supplied
WMS parameters, so how can i pass these parameters to my vector plugin,
i
couldn’t find a resource which will help me.

Well, you are not providing much information in this email.

  • What kind of plugin are we talking about?
  • Is it a DataStore a CoverageStore?
  • Waht kind of data are we talking about? Raster? Vector?

Thank you very much in advance.

Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
from Actuate! Instantly Supercharge Your Business Reports and Dashboards
with Interactivity, Sharing, Native Excel Exports, App Integration &
more
Get technology previously reserved for billion-dollar corporations, FREE

http://pubads.g.doubleclick.net/gampad/clk?id=190641631&iu=/4140/ostg.clktrk

Geoserver-devel mailing list
Geoserver-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geoserver-devel