From: Andrea A. <and...@ge...> - 2018-03-19 09:37:09
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Hi Peter, I believe something like that should be doable by using the RasterZonalStatistics process class, in the (unsupported, but not too much) gt-process-raster module. You'll have to compute the polygon area yourself, if you're in projected coordinates you can just buffer a point, otherwise you can probably use some of the code in the PointBuffers process (gt-process-vector) Hope this helps Cheers Andrea On Mon, Mar 19, 2018 at 10:21 AM, Peter <doj...@or...> wrote: > Dear List Members, > > > I am completely new to geotools. > > > I have gridded raster data (population) in a GeoTiff. > > I can get the grid value for a certain longitude/latitude with geotools. > Fine. > > But how can I get the summarized value of all grid cells within a given > distance around a given point ? > > (I know that it will not be a real circle, more a polygon depending on > the grid cells' size.) > > I would be thankful if someone could give some ideas. I did read the > tutorials. But nothing matched. > > Thank you! > > Peter > > > > > > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > GeoTools-GT2-Users mailing list > Geo...@li... > https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users > -- Regards, Andrea Aime == 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 di Montramito 3/A 55054 Massarosa (LU) 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. |