On 02/09/2010 22:39, Chris Jackson wrote: > Armin > > It is only a 50mb GeoTIFF of bathmetry for the UK continental shelf with 12 > classes. It takes about 8 seconds to draw, I wasn't sure about using a > tileindex (my old app didn't), but will start using one. I also have a > slight mix in projections WGS 84 UTM zone 31N and UTM zone 30N, which I > think may slow things down too. > > Chris > > On 2 September 2010 20:13, Armin Burger<armin.bur...@gmx.net> wrote: >
Just re-project all images to the projection used for your MAP, using eg. gdalwarp: # gdalwarp -s_srs "EPSG:32631" -t_srs "EPSG:32630" -co "TILED=YES" in_img.tix out_img.tif re-projects from UTM zone 31 to zone 30 and creates a GeoTiff with internal tiles. Then create overviews with gdaladdo, like # gdaladdo -ro your_img_file.tif 4 8 16 32 The 4GB image I mentioned took 1-2 s to be rendered into the map image, depending on scale. armin ------------------------------------------------------------------------------ This SF.net Dev2Dev email is sponsored by: Show off your parallel programming skills. Enter the Intel(R) Threading Challenge 2010. http://p.sf.net/sfu/intel-thread-sfd _______________________________________________ pmapper-users mailing list pmapper-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pmapper-users
