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Re: [Geoserver-users] White lines in GWC 900913, latest nightly build
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From: Arne K. <ak...@op...> - 2009-07-03 12:58:23
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In the latest GWC a "gutter" function was introduced, a buffer around each image that gets sliced away. That would probably fix this, as long as you don't have labels that get cut off. -Arne Simone Giannecchini wrote: > Ciao Roger, > I have been able to reproduce it on my workstation and to identify the cause. > Am I right when I say that this problem was already present in 1.7.3 and before? > > > Simone. > > ------------------------------------------------------- > Ing. Simone Giannecchini > GeoSolutions S.A.S. > Owner - 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://simboss.blogspot.com/ > http://www.linkedin.com/in/simonegiannecchini > > ------------------------------------------------------- > > > > On Mon, Jun 29, 2009 at 3:27 PM, Roger Bedell<syl...@ma...> wrote: > >> Ivan, >> Thanks a million, that does seem to "fix" it. However our client really >> wants interpolation, to avoid pixelation when zoomed in, as well as >> generally better results at all zoom levels. >> >> However, this fix gives us a little breathing room, as the white lines were >> much worse than pixelation. >> >> Simone, this should give you a little more information on where this is >> occurring. >> >> Roger >> >> -------------------------------------------------- >> From: "Ivan Grcic" <ig...@gm...> >> Sent: Monday, June 29, 2009 3:08 PM >> To: "Roger Bedell" <ro...@sy...> >> Cc: <geo...@li...> >> Subject: Re: [Geoserver-users] White lines in GWC 900913, latest nightly >> build >> >> >>> Hi, >>> >>> i remember i had the same issue using biliniear or cubic >>> interpolation method. using nearest neighbour "solved" the problem... >>> maybe this helps you, cheers >>> >>> On Mon, Jun 29, 2009 at 1:56 PM, Roger Bedell<syl...@ma...> >>> wrote: >>> >>>> Simone, >>>> >>>> I believe you can reproduce it easily using the steps and data I gave you >>>> already, on your own server. Should only take you a couple of minutes. >>>> >>>> It is a critical problem for us, so many thanks for any help you can >>>> provide. >>>> >>>> Roger >>>> >>>> -------------------------------------------------- >>>> From: "Simone Giannecchini" <sim...@ge...> >>>> Sent: Sunday, June 28, 2009 10:13 PM >>>> To: "Roger Bedell" <ro...@sy...> >>>> Cc: <geo...@li...> >>>> Subject: Re: [Geoserver-users] White lines in GWC 900913, latest nightly >>>> build >>>> >>>> >>>>> Ciao Roger, >>>>> are you able to isolate a single request from GWC to GeoServer so that >>>>> we >>>>> can: >>>>> >>>>> 1> check if this is geoserver's fault >>>>> 2> if 1 applies, fix the problem. >>>>> >>>>> >>>>> Simone. >>>>> ------------------------------------------------------- >>>>> Ing. Simone Giannecchini >>>>> GeoSolutions S.A.S. >>>>> Owner - 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://simboss.blogspot.com/ >>>>> http://www.linkedin.com/in/simonegiannecchini >>>>> >>>>> ------------------------------------------------------- >>>>> >>>>> >>>>> >>>>> On Sun, Jun 28, 2009 at 10:03 AM, Roger >>>>> Bedell<syl...@ma...> >>>>> wrote: >>>>> >>>>>> Good Morning. >>>>>> >>>>>> I've run into a problem using GeoServer gwc in 900913 with imagery. >>>>>> Here >>>>>> is >>>>>> the setup: >>>>>> >>>>>> - Latest nightly build GeoServer (note, it also occurs in 1.7.3) >>>>>> - Imagery stored as GeoTiff in 4326. >>>>>> - Using Mosaic imaging >>>>>> >>>>>> All works perfectly using gwc 4326, but when viewing in 900913, get >>>>>> white >>>>>> lines at gwc tile borders. >>>>>> >>>>>> For a quick view, go here and zoom in once: >>>>>> http://ogi.state.ok.us:8080/geoserver/gwc/demo/ogi:Test_1?srs=EPSG:900913 >>>>>> >>>>>> To reproduce on your own machine: >>>>>> >>>>>> Download these sample files: >>>>>> http://ogi.state.ok.us/ogi/Downloads/gwctest.zip >>>>>> Unzip >>>>>> Create a mosaic coverage - set OutputTransparentColor: 0 to make it >>>>>> show >>>>>> up >>>>>> better (white instead of black line) >>>>>> Go to the gwc demo page in GeoServer >>>>>> Click on the EPSG:900913 link >>>>>> Zoom in once (or more) >>>>>> Zoom in some more (3x), and the white lines get even worse, in both >>>>>> horizontal as well as vertical. >>>>>> >>>>>> Note that it is not at the borders of the sample images as these are >>>>>> square, >>>>>> and the join is in the center. Instead, the white line is at the join >>>>>> of >>>>>> the >>>>>> gwc tile. >>>>>> >>>>>> Thanks for looking into this! >>>>>> Roger >>>>>> ------------------------------------------------------------------------------ >>>>>> >>>>>> _______________________________________________ >>>>>> Geoserver-users mailing list >>>>>> Geo...@li... >>>>>> https://lists.sourceforge.net/lists/listinfo/geoserver-users >>>>>> >>>>>> >>>>>> >>>> ------------------------------------------------------------------------------ >>>> _______________________________________________ >>>> Geoserver-users mailing list >>>> Geo...@li... >>>> https://lists.sourceforge.net/lists/listinfo/geoserver-users >>>> >>>> >>> >>> -- >>> Ivan Grcic >>> >>> >> ------------------------------------------------------------------------------ >> _______________________________________________ >> Geoserver-users mailing list >> Geo...@li... >> https://lists.sourceforge.net/lists/listinfo/geoserver-users >> >> > > ------------------------------------------------------------------------------ > _______________________________________________ > Geoserver-users mailing list > Geo...@li... > https://lists.sourceforge.net/lists/listinfo/geoserver-users > |
