eccodes/tests/grib_grid_lambert_conformal.sh

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#!/bin/sh
# (C) Copyright 2005- ECMWF.
#
# This software is licensed under the terms of the Apache Licence Version 2.0
# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
#
# In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
# virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
. ./include.ctest.sh
if [ $HAVE_GEOGRAPHY -eq 0 ]; then
exit 0
fi
# Define a common label for all the tmp files
label="grib_lambert_conformal_test"
tempFilt="temp.${label}.filt"
tempGrib="temp.${label}.grib"
tempOut="temp.${label}.out"
input=$ECCODES_SAMPLES_PATH/GRIB2.tmpl
# Create a filter
cat > $tempFilt <<EOF
set gridType="lambert";
set numberOfDataPoints=294000;
set shapeOfTheEarth=6;
set Nx=588;
set Ny=500;
set latitudeOfFirstGridPoint=40442000;
set longitudeOfFirstGridPoint=353559000;
set LaD=60000000;
set LoV=2200000;
set Dx=2499000;
set Dy=2499000;
set Latin1=46401000;
set Latin2=46401000;
set numberOfValues=294000;
write;
EOF
# Use filter on input to create a new Lambert conformal GRIB
${tools_dir}/grib_filter -o $tempGrib $tempFilt $input
if [ ! -f "$tempGrib" ]; then
echo 'Failed to create output GRIB from filter' >&2
exit 1
fi
# Invoke Geoiterator on the newly created GRIB file
${tools_dir}/grib_get_data $tempGrib > $tempOut
${tools_dir}/grib_ls -l 50,0 $tempGrib
# Oblate earth
# --------------
cat > $tempFilt <<EOF
set gridType="lambert";
set numberOfDataPoints=294000;
set Nx=588;
set Ny=500;
set latitudeOfFirstGridPoint=40442000;
set longitudeOfFirstGridPoint=353559000;
set LaD=60000000;
set LoV=2200000;
set Dx=2499000;
set Dy=2499000;
set Latin1=46401000;
set Latin2=46401000;
set shapeOfTheEarth=2; # oblate earth
set numberOfValues=294000;
write;
EOF
# Use this filter and the input GRIB to create a new GRIB
${tools_dir}/grib_filter -o $tempGrib $tempFilt $input
if [ ! -f "$tempGrib" ]; then
echo 'Failed to create output GRIB from filter' >&2
exit 1
fi
grib_check_key_equals $tempGrib 'earthIsOblate,earthMinorAxisInMetres,earthMajorAxisInMetres' '1 6356775 6378160'
# Invoke Geoiterator on the oblate lambert GRIB
${tools_dir}/grib_get_data $tempGrib > $tempOut
# Nearest neighbour on the oblate lambert GRIB
${tools_dir}/grib_ls -l 40.44,353.56 $tempGrib
# Clean up
rm -f $tempFilt $tempGrib $tempOut