Hmm, the embarassment of naïve configuration... . :D Let me do some additional testing on my end. I assume then that you got the image pyramid plugin to work without a special version of GeoServer?
Thanks, Steve -----Original Message----- From: Andrea Aime [mailto:aa...@opengeo.org] Sent: Monday, March 29, 2010 2:25 PM To: s...@clevelandmetroparks.com Cc: 'Simone Giannecchini'; geoserver-devel@lists.sourceforge.net Subject: Re: [Geoserver-devel] Image pyramid improvements and tutorial Stephen V. Mather ha scritto: > Hi Simone, > The correct CRS is EPSG:3728, > http://spatialreference.org/ref/epsg/3728/, although EPSG:102722 is > pretty close. > The size of the tiff is, well, either cheapness or laziness. The > current format, naming convention and size is what has been used by > our engineers in CAD for 8 years, and is referenced by all their CAD > drawings, and I'm trying to not have two copies of a 160GB dataset. > That said, if there's a strong performance gain to be had by retiling > to a smaller size, I can squeeze more space out of our RAID. Hi Stephen, tried another time, and I could also build the pyramid correctly, though first I wiped out all the shapefiles and property files you did attach so that the pyramd plugin could perform its job. I can see the data just fine after that, though the rendering is quite slow. The TIFFs are not really very well setup, they do have no inner tiling, yet, I'm a bit surprised about the slowness. Looked into it and the reason is that a reprojection is happening, this is due to the native definition inside the GeoTiff not matching the official EPSG one. gdalinfo reports: PROJCS["NAD_1983_StatePlane_Ohio_North_FIPS_3401_Feet", GEOGCS["NAD83", DATUM["North_American_Datum_1983", SPHEROID["GRS 1980",6378137,298.2572221010002, AUTHORITY["EPSG","7019"]], AUTHORITY["EPSG","6269"]], PRIMEM["Greenwich",0], UNIT["degree",0.0174532925199433], AUTHORITY["EPSG","4269"]], PROJECTION["Lambert_Conformal_Conic_2SP"], PARAMETER["standard_parallel_1",40.43333333333333], PARAMETER["standard_parallel_2",41.7], PARAMETER["latitude_of_origin",39.66666666666666], PARAMETER["central_meridian",-82.5], PARAMETER["false_easting",1968500], PARAMETER["false_northing",0], UNIT["US survey foot",0.3048006096012192, AUTHORITY["EPSG","9003"]]] whilst the EPSG database contains: PROJCS["NAD83(NSRS2007) / Ohio North (ftUS)", GEOGCS["NAD83(NSRS2007)", DATUM["NAD83 (National Spatial Reference System 2007)", SPHEROID["GRS 1980", 6378137.0, 298.257222101, AUTHORITY["EPSG","7019"]], TOWGS84[0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0], AUTHORITY["EPSG","6759"]], PRIMEM["Greenwich", 0.0, AUTHORITY["EPSG","8901"]], UNIT["degree", 0.017453292519943295], AXIS["Geodetic longitude", EAST], AXIS["Geodetic latitude", NORTH], AUTHORITY["EPSG","4759"]], PROJECTION["Lambert Conic Conformal (2SP)", AUTHORITY["EPSG","9802"]], PARAMETER["central_meridian", -82.5], PARAMETER["latitude_of_origin", 39.666666666666664], PARAMETER["standard_parallel_1", 41.7], PARAMETER["false_easting", 1968500.0], PARAMETER["false_northing", 0.0], PARAMETER["scale_factor", 1.0], PARAMETER["standard_parallel_2", 40.43333333333333], UNIT["foot_survey_us", 0.30480060960121924], AXIS["Easting", EAST], AXIS["Northing", NORTH], AUTHORITY["EPSG","3728"]] As you can see there are quite a bit of parameters that are not equal. To get decent performance you'd need to reproject the tiles to an officially supported EPSG code, or create a new one in $GEOSERVER_DATA_DIR/user_projections/epsg.properties that matches 1-1 the WKT of your data Cheers Andrea -- Andrea Aime OpenGeo - http://opengeo.org Expert service straight from the developers. ------------------------------------------------------------------------------ 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 _______________________________________________ Geoserver-devel mailing list Geoserver-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-devel
