Ciao Simone!
Thank you very much! That was the nudge that I needed. I used
it.geosolutions.utils.imagepyramid.PyramidBuilder from the
modules/unsupported/coveragetools in 2.4.1 to generate my pyramid.
Kevin
On Wed, Apr 16, 2008 at 3:52 PM, Simone Giannecchini <[EMAIL PROTECTED]> wrote:
> Ciao Kevin,
> please, read below...
>
>
> On Thu, Apr 17, 2008 at 12:45 AM, Kevin Ward <[EMAIL PROTECTED]> wrote:
> > Hi,
> >
> > Could some kind soul give me a nudge with regards to the
> > ImagePyramidReader? I have a pyramid already constructed but I want to
> > be able to retrieve a scaled image, not just the full-size. The brief
> > code I am using is:
> >
> > ImagePyramidReader reader = new ImagePyramidReader(new File(PYRAMID_PATH));
> > GridCoverage2D grid = (GridCoverage2D)reader.read(null);
> > ImageIO.write(grid.getRenderedImage(), "PNG",
> > new File("/home/pyramid-test/pyramid_out.png"));
> >
> > This results in a full-sized rendering of the pyramid. How do I
> > configure it to render something at 50% (for example)?
>
> You need to supply the reader with a gridgeometry that contains the
> desired spatial region as an envelope and the target dimension of the
> raster you wnat to obtain.
> This will force the reader to do crop and subsample. You can check the
> tests of the ImagePyramidReader class, specifically
> ImagePyramidReaderTest.
>
> A snippet can be found here:
> http://pastebin.com/m3e506325
>
> Which version of the code have you used to generate the pyramid?
>
>
> Ciao,
> Simone.
>
>
>
> >
> > I am guessing that I need to feed GeneralParameterValues to
> > reader.read(...) but after looking through the javadocs and the
> > examples I am just not coming up with the solution.
> >
> > Any assistance would be greatly appreciated, and I would be glad to
> > add the resulting snippet to the examples section of the site.
> >
> > Thanks,
> >
> > Kevin
>
> --
> -------------------------------------------------------
> Eng. Simone Giannecchini
> President /CEO GeoSolutions S.A.S.
> Via Carignoni 51
> 55041 Camaiore (LU)
> Italy
>
> phone: +39 0584983027
> fax: +39 0584983027
> mob: +39 333 8128928
>
>
> http://www.geo-solutions.it
>
> -------------------------------------------------------
>
--
Kevin Ward
NASA Earth Observations (NEO)
Science Systems and Applications, Inc.
[EMAIL PROTECTED]
503-977-2970 (home)
Office Hours 7:30am-4pm Pacific Time
http://neo.sci.gsfc.nasa.gov/
http://earthobservatory.nasa.gov/
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