Geotiff
Extracting tiles from a GeoTIFF dataset.raw=${HOME}/sea/bathymetry/ETOPO1_Bed_c_geotiff.tif
tiles=${HOME}/sea/bathymetry/tiles/tile
stride=18
offset=0
for i in {-10..9}; do
for j in {-5..4}; do
cell=-$((i+10))-$((j+5))
xmin=$((stride*i))
ymin=$((stride*j+offset))
xmax=$((stride*(i+1)))
ymax=$((stride*(j+1)+offset))
echo $xmin $ymin $xmax $ymax $cell
gdalwarp -overwrite -r cubicspline -te $xmin $ymin $xmax $ymax $raw $tiles$cell.tif
gdal_translate -ot UInt16 -scale -10000 10000 0 20000 -of ENVI $tiles$cell.tif $tiles$cell.raw
gdal_translate -ot UInt16 -scale -of ENVI $tiles$cell.tif $tiles$cell.raw
done
done
Follow this link for the raw script.