Ciao Matteo, this could be a problem somewhere in the polygonalization algorithm itself, as you higlighted.
It might be worth opening a JIRA report and attaching a test case with some sample data. Of course you are more than welcome to provide a PR as well in case you identify and fix the problem. 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 3:37 PM, matteo.eccher <[email protected]> wrote: > Dear all, > I am trying to use the Geoserver 2.5.2 default WPSes that work with raster > data. I need to retrieve the areas as FeatureCollection which have the band > value contained in a range. In order to extract these polygons i am using > the WPS process PolygonExtraction, but there's a problem with the result. > The process doesn't extract some areas which have their values in the range > and therefore should be included in the output. I have also tried with some > default Geoserver rasters as input but the problem is the same. > I have noticed that using the WPS RangeLookup with the same input (raster) > and selecting the same range of values, there's no problem. The reclassified > areas are the ones which have the values contained in the range, with no > exclusion. I have also tried to take the output of RangeLookup and use it as > the input of PolygonExtraction but the result is the same, some areas are > missing even though they should be extracted. > What could the problem be? Is there another way to accomplish what I am > trying to do? > > I hope I made myself clear. > Thanks for the help. > > Regards, > Matteo > > > > -- > View this message in context: > http://osgeo-org.1560.x6.nabble.com/WPS-raster-PolygonExtraction-tp5187905.html > Sent from the GeoServer - User mailing list archive at Nabble.com. > > ------------------------------------------------------------------------------ > 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-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/geoserver-users ------------------------------------------------------------------------------ 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-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users
