Ciao John, the scale operation can be used to answer questions like "I want to scale my image down/up by xxxx on each direction"
Quoting JAI Scale javadoc: "Specifying a scale factor of greater than 1 increases the size of the image, specifying a scale factor between 0 and 1 (non-inclusive) decreases the size of an image. An IllegalArgumentException will be thrown if the specified scale factors are negative or equal to zero." About the warp in geotools, you cannot control it, at least not as it is. Ciao, Simone ------------------------------------------------------- Ing. Simone Giannecchini GeoSolutions S.A.S. Founder - Software Engineer Via Carignoni 51 55041 Camaiore (LU) Italy phone: +39 0584983027 fax: +39 0584983027 mob: +39 333 8128928 http://www.geo-solutions.it http://geo-solutions.blogspot.com/ http://www.linkedin.com/in/simonegiannecchini http://twitter.com/simogeo ------------------------------------------------------- On Tue, Mar 16, 2010 at 7:31 PM, john poole <john.po...@valtus.com> wrote: > I might not understand what the scale operation does, but wouldn't that mean > less resolution in both the image and the operation? > > I'm trying to find something that essentially uses fewer points to execute a > warp. > > > On 3/16/2010 11:54 AM, Simone Giannecchini wrote: >> >> Ciao John, >> if you want to get more speed vs more accuracy you can use one of the >> scale operations. >> >> Check this test to get a feeling about what you can do: >> >> >> http://svn.osgeo.org/geotools/trunk/modules/library/coverage/src/test/java/org/geotools/coverage/processing/ScaleTest.java >> >> >> Simone. >> ------------------------------------------------------- >> Ing. Simone Giannecchini >> GeoSolutions S.A.S. >> Founder - Software Engineer >> Via Carignoni 51 >> 55041 Camaiore (LU) >> Italy >> >> phone: +39 0584983027 >> fax: +39 0584983027 >> mob: +39 333 8128928 >> >> >> http://www.geo-solutions.it >> http://geo-solutions.blogspot.com/ >> http://www.linkedin.com/in/simonegiannecchini >> http://twitter.com/simogeo >> >> ------------------------------------------------------- >> >> >> >> On Mon, Mar 15, 2010 at 6:29 PM, john poole<john.po...@valtus.com> wrote: >> >>> >>> Is there a way to call Coverage.resample so that accuracy is >>> sacrificed for speed? >>> i.e. can we change the block size from whatever the default is, (9?) to >>> be something larger? >>> >>> >>> >>> >>> ------------------------------------------------------------------------------ >>> Download Intel® Parallel Studio Eval >>> Try the new software tools for yourself. Speed compiling, find bugs >>> proactively, and fine-tune applications for parallel performance. >>> See why Intel Parallel Studio got high marks during beta. >>> http://p.sf.net/sfu/intel-sw-dev >>> _______________________________________________ >>> Geotools-gt2-users mailing list >>> Geotools-gt2-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users >>> >>> >> >> . >> >> > > > ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Geotools-gt2-users mailing list Geotools-gt2-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
