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** Creating map tiles: ********************************** Using maptiler.org For Mac OS X 10.6+: From /path/to/workspace/UNL_OpenMap/map_source or http://code.google.com/p/maptiler/ get and run: 1. http://www.kyngchaos.com/files/software/unixport/GDAL_Complete-1.7.dmg (nothing to do after installation) 2. http://maptiler.googlecode.com/issues/attachment?aid=1641967504875078876&name=maptiler-1.0-beta2fix3-macosx.zip&token=11bf9597dafa626a65cd4afa3ef5d736 Steps in maptiler program: 1. Google Maps Compatible 2. "Add" the full map image from /path/to/workspace/UNL_OpenMap/map_source Set "Georeference" to 40.8420 40.8112 -96.6443 -96.7198 for the UNL 3D map (current coords as of 8/18/10 for map_source/city_east_top_8-2010.png) 3. WGS84 - Latitude and Longitude 4. Min zoom: 14 max zoom: 18 and - transparent png (then after creating them see Crushing pngs below) - JPEG (then after creating them see Editing JPGs below) 5. Save in /path/to/workspace/UNL_OpenMap/www/images/tilesets/unl - dont need a destination url 6. Dont need viewers 7. Dont worry about details 8. Press "Render" Crushing pngs Each tile created by MapTiler is roughly 135kb - to minimize file size: 1. From map_source or http://pngnq.sourceforge.net/ install pngnq (instuctions in the README) 2. Run: cd /path/to/workspace/UNL_OpenMap/www/images/tilesets/unl find . -name *.png -type f -exec echo "Processing '{}'" \; -exec pngnq -n 256 {} \; 3. The pngnq -f option which is supposed to overwrite the existing file doesn't work so we'll rename all the files ourself, removing the "-nq8": find . -name "*-nq8.png" -exec bash -c "mv \$1 \`echo \$1 | sed s/-nq8.png/.png/\`" -- {} \; Editing JPGs This will remove edge tiles that have large blocks of white 1. Run: cd /path/to/workspace/UNL_OpenMap/www/images/tilesets/unl 2. Run: find . -name *.jpg -type f -exec php ../../../../map_source/process_jpgs.php {} \; Compressing JPGs (Quality can be adjusted by opening the script file specified below and changing the number by the comment "set quality to suit") 1. In Photoshop CS5: File->Scripts->Browse... 2. Select /path/to/workspace/UNL_OpenMap/map_source/photoshop_jpg_compress_script.jsx 3. Select /path/to/workspace/UNL_OpenMap/www/images/tilesets/unl ** Updating Map Features: ********************************** Updating Lat/Long for Buildings 1. Sourced from UNL_Geography_SpatialData_Campus project Updating Buildings List/Codes 1. Replace the /data/all_buildings.csv file obtained from FMP (Currently adjustments are made by UCOMM in additional_buildings.csv to compensate for things like SELQ, MEMS) 2. Make sure all values (commas,quotes) are properly escaped in it 3. Run /data/csv_to_array.php to replace buildings.inc.php and locations.inc.php Updating Other Features 1. Features such as Emergency Phones, Police Stations, etc are in /data as georss xml files
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Openstreetmaps implementation of University of Nebraska–Lincoln maps
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