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DavidMoraisFerreira/build_hillshade_from_DTM_lu.sh

Last active March 26, 2020 12:55
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build_hillshade_from_DTM_lu.sh
#Requires GDAL, resulting BigTif is about 5GB
#https://data.public.lu/fr/datasets/digital-terrain-model-high-dem-resolution/
wget https://data.public.lu/fr/datasets/r/b21141d7-afc3-42a1-9c65-4587169ef3a7 -O ANA_LUREF_NGL_DTM.zip
unzip ANA_LUREF_NGL_DTM.zip -d ANA_LUREF_NGL_DTM
cd ANA_LUREF_NGL_DTM
mkdir AllZones
cp Zone1_Zone2/* AllZones
cp Zone3_Zone4/* AllZones
gdalbuildvrt -resolution average -r nearest ANA_LUREF_NGL_DTM.vrt "AllZones/*.tif" -a_srs "EPSG:2169"
gdaldem hillshade ANA_LUREF_NGL_DTM.vrt lu_hillshade_2017.tif -of GTiff -b 1 -z 1.0 -s 0.5 az 315.0 -alt 45.0
gdaladdo -ro --config COMPRESS DEFLATE --config COMPRESS_OVERVIEW DEFLATE --config ZLEVEL 9 --config BIGTIFF_OVERVIEW IF_SAFER --config GDAL_TIFF_OVR_BLOCKSIZE 512 -r nearest ANA_LUREF_NGL_DTM.vrt 4 16 64 256 1024 4096
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See also: https://gist.github.com/DavidMoraisFerreira/1600470627096a4a427a5d71f5092209

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