what best proceed read, paint news map data?


i am prying minute uncomplicated navigation concentration pet project. after poison around giveaway map-data i have staid 2007 line/shapefile map data. information separate adult zip files sole counties i've downloaded unparalleled counties map-data area.



what best proceed review map-data useable format?



how should i:




  • read files

  • parse - unchanging countenance library already parse shapefiles?

  • load information concentration - should i bucket points directly datastructure memory? little database? i have need attention once tie concentration map data. user bucket shapefile again.



what best proceed news map once i have review shapefile data?



ideally i'd means review counties map information shapefile news poly-lines onto shade grant rotating scaling.



how should i:




  • convert lat/lon points shade coordinates? - distant i know shapefile uses longitude embodiment the points. apparently i'm going have modify somehow shade coordinates arrangement map features.

  • render map information (a array polylines roads, boundaries, etc) proceed i simply stagger scale whole map?

  • render whole map array "tiles" wholly features/lines within regard area rendered?



ex. tiger information rendered arrangement map:

alt text



anyone trust understanding best proceed me review files, i should paint (database, memory datastructure) program, i should news (with rotating/scaling) map-data shade appreciated.



edit: clarify, i wish any google yahoo maps api. similarly, i don't wish openstreetmap. i'm looking some-more from-scratch proceed utilizing those apis/programs. desktop application.



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