"Seegrid will be due for a migration to confluence on the 1st of August. Any update on or after the 1st of August will NOT be migrated"


Script source


Test conversions are available here


The 'Blessed Solution' for current 'Merged Grids'

gdal_translate busselton.asc -of netCDF -co FORMAT=NC4 -co COMPRESS=DEFLATE busselton-final.nc
ncrename -v Band1,elevation busselton-final.nc
ncatted -h -O -a long_name,elevation,o,c,elevation busselton-final.nc
ncatted -h -O -a  positive,elevation,a,c,"up" busselton-final.nc
ncatted -h -O -a  units,elevation,a,c,"http://www.opengis.net/def/uom/OGC/1.0/metre" busselton-final.nc

Warping Options

The multi Warp steps can be seen here
gdalwarp busselton-final.nc -t_srs "+proj=latlong +datum=WGS84" -co "COMPRESS=DEFLATE" -r cubic output.wgs84.cubic.nc  -wo OPTIMIZE_SIZE=TRUE -of netCDF -dstnodata -9999
gdalwarp output.wgs84.cubic.nc -co "COMPRESS=DEFLATE" -r cubic -t_srs "+proj=utm +zone=50" output.warp.back.again.to.utm.nc  -wo OPTIMIZE_SIZE=TRUE -of netCDF -dstnodata -9999

Both Warped products are also hosted for inspection and a verdict on warping options is required.

VERDICT: Warping has changed the product, each scientist will view this differently, it is not really the original data on a new grid - it is a derived product on a new grid.

Question: What does GA want to host? The originals (as is) or a common CRS (coordinate reference system).
Topic revision: r5 - 11 Aug 2014, TerryRankine

Current license: All material on this collaboration platform is licensed under a Creative Commons Attribution 3.0 Australia Licence (CC BY 3.0).