[gdal-dev] geoTiff to tiles

2012-04-22 Thread len lee
I am working with 2gb large geotiff image.I need convert the large geoTiff to tiles (about 250x250 pixels) with c++ language; i dont wanna read the whole geotiff file since it is gonna be real slow .. i want to get the tiles according to geographic position and i am not sure exactly how to do it

[gdal-dev] requesting tiles according to my dteds data c++

2012-04-09 Thread len lee
hello; i downloaded dted data dt0 from raster roam website and there are 3 folders e055, e056 and e057 and within each folder there are 3 dted files and i guess each dted file here represent a tile within my terrain. now what am trying to do is requesting the terrain tiles according to my dted data