[Geoserver-users] Label fit to polygon

Jukka_Rahkonen · September 10, 2015, 12:36pm

Hi,

Do you use OpenLayers or tiles with some other application? Try using single tile mode.

-Jukka Rahkonen-

···

Aastha Aggarwal wrote:

Hey thanks,

I removed centroid that goodnessofFit worked but the label is showing repetitive all over the polygon.

From: Andrea Aime
Sent: ‎10-‎09-‎2015 17:51
To: Aastha Aggarwal
Cc: geoserver-users@lists.sourceforge.net
Subject: Re: [Geoserver-users] Label fit to polygon

On Thu, Sep 10, 2015 at 2:17 PM, Aastha Aggarwal <aasthaggrwl@…84…> wrote:

SHAPE

I believe this is the reason why it’s not working, with the transformation applied

the code thinks it’s labeling a point, not a polygon, so goodness of fit is not applied.

I’m not aware of a way to make it label the centroid, but consider the polygon for

the fit checks.

Cheers

Andrea

–

==

GeoServer Professional Services from the experts! Visit

http://goo.gl/it488V 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.

Aastha_Aggarwal · September 10, 2015, 1:38pm

Hi,

Do you use OpenLayers or tiles with some other application? Try using single tile mode.

-Jukka Rahkonen-

···

Aastha Aggarwal wrote:

Hey thanks,

I removed centroid that goodnessofFit worked but the label is showing repetitive all over the polygon.

From: Andrea Aime
Sent: ‎10-‎09-‎2015 17:51
To: Aastha Aggarwal
Cc: geoserver-users@lists.sourceforge.net
Subject: Re: [Geoserver-users] Label fit to polygon

On Thu, Sep 10, 2015 at 2:17 PM, Aastha Aggarwal <aasthaggrwl@anonymised.com4…> wrote:

SHAPE

I believe this is the reason why it’s not working, with the transformation applied

the code thinks it’s labeling a point, not a polygon, so goodness of fit is not applied.

I’m not aware of a way to make it label the centroid, but consider the polygon for

the fit checks.

Cheers

Andrea

–

==

GeoServer Professional Services from the experts! Visit

http://goo.gl/it488V 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.

Andrea_Aime4 · September 10, 2015, 1:58pm

On Thu, Sep 10, 2015 at 3:38 PM, Aastha Aggarwal <aasthaggrwl@anonymised.com>
wrote:

We are using OpenLayers.
No I can't use my application in single tile mode.

Is this some type of restriction that centroid and goodnessOfFit can't be
used together?

It has been already explained, When you extract the centroid the labelling
system is labeling
a point, not a polygon anymore, so the goodness of fit cannot be applied,
the polygon is gone
(it really does not get into the labelling subsystem anymore, only the
centroid does).

If you want to modify the code to suit your needs I can show you the
classes involved.
For generalities sake, I'd add a new vendor option "goodnessOfFitReference"
where you can specify the field that needs to be used for label fitting, if
you implement
it there is a good chance a pull request from yours with such change would
be accepted
in the code base.

Cheers
Andrea

--

GeoServer Professional Services from the experts! Visit
http://goo.gl/it488V 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.

-------------------------------------------------------

Aastha_Aggarwal · September 10, 2015, 3:51pm

Thanks Andrea.
Will check about the code change with my seniors or some other way to implement my requirement.

Thanks again for quick replies

···

On Thu, Sep 10, 2015 at 3:38 PM, Aastha Aggarwal <aasthaggrwl@anonymised.com> wrote:

We are using OpenLayers.
No I can’t use my application in single tile mode.

Is this some type of restriction that centroid and goodnessOfFit can’t be used together?

It has been already explained, When you extract the centroid the labelling system is labeling
a point, not a polygon anymore, so the goodness of fit cannot be applied, the polygon is gone
(it really does not get into the labelling subsystem anymore, only the centroid does).

If you want to modify the code to suit your needs I can show you the classes involved.
For generalities sake, I’d add a new vendor option “goodnessOfFitReference”
where you can specify the field that needs to be used for label fitting, if you implement
it there is a good chance a pull request from yours with such change would be accepted
in the code base.

Cheers
Andrea

–

==
GeoServer Professional Services from the experts! Visit
http://goo.gl/it488V 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.

roarbra · September 10, 2015, 8:53pm

You could also have an option to label polygons only when the centroid is present I think. In that way you could avoid the confusion about repetitive labels in tiles mode.

Best regards

Roar Brenden

···

On Thu, Sep 10, 2015 at 3:38 PM, Aastha Aggarwal aasthaggrwl@anonymised.com wrote:

We are using OpenLayers.
No I can’t use my application in single tile mode.

Is this some type of restriction that centroid and goodnessOfFit can’t be used together?

It has been already explained, When you extract the centroid the labelling system is labeling
a point, not a polygon anymore, so the goodness of fit cannot be applied, the polygon is gone
(it really does not get into the labelling subsystem anymore, only the centroid does).

If you want to modify the code to suit your needs I can show you the classes involved.
For generalities sake, I’d add a new vendor option “goodnessOfFitReference”
where you can specify the field that needs to be used for label fitting, if you implement
it there is a good chance a pull request from yours with such change would be accepted
in the code base.

Aastha_Aggarwal · September 11, 2015, 4:37am

Hi Roar,

If I use Centroid then goodnessOfFit is not working and labels are displaying even if they are not fit in polygon geometry.

Aastha

···

On Thu, Sep 10, 2015 at 3:38 PM, Aastha Aggarwal <aasthaggrwl@anonymised.com4…> wrote:

We are using OpenLayers.
No I can’t use my application in single tile mode.

Is this some type of restriction that centroid and goodnessOfFit can’t be used together?

It has been already explained, When you extract the centroid the labelling system is labeling
a point, not a polygon anymore, so the goodness of fit cannot be applied, the polygon is gone
(it really does not get into the labelling subsystem anymore, only the centroid does).

If you want to modify the code to suit your needs I can show you the classes involved.
For generalities sake, I’d add a new vendor option “goodnessOfFitReference”
where you can specify the field that needs to be used for label fitting, if you implement
it there is a good chance a pull request from yours with such change would be accepted
in the code base.

Andrea_Aime4 · September 11, 2015, 7:07am

On Thu, Sep 10, 2015 at 10:53 PM, Roar Brænden <roar.brenden.no@anonymised.com..>
wrote:

You could also have an option to label polygons only when the centroid is

present I think. In that way you could avoid the confusion about repetitive
labels in tiles mode.

Yes, that's another good idea.
In both cases, the downside is that some label might never appear, if they
keep on crossing a tile border at
all zoom levels (e.g., if the centroid of the polygon happens to be close
to a low zoom level tile border).

Meta-tiling will reduce this issue to some extent, but won't eliminate it
fully.

Cheers
Andrea

--

GeoServer Professional Services from the experts! Visit
http://goo.gl/it488V 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.

-------------------------------------------------------