eccodes/tests/grib_element.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
label="grib_element_test"
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tempGrib=temp.${label}.grib
tempRef=temp.${label}.ref
tempText=temp.${label}.txt
tempFilt=temp.${label}.filt
input=$ECCODES_SAMPLES_PATH/reduced_gg_pl_48_grib2.tmpl
# Print the last three entries from the "pl" array
cat > $tempFilt <<EOF
meta elemA element(pl, Nj - 3);
meta elemB element(pl, Nj - 2);
meta elemC element(pl, Nj - 1);
meta elemZ element(pl, -1); # another way of getting the last element
print "elemA=[elemA], elemB=[elemB], elemC=[elemC], elemZ=[elemZ]";
EOF
${tools_dir}/grib_filter $tempFilt $input > $tempText
echo "elemA=36, elemB=25, elemC=20, elemZ=20" > $tempRef
diff $tempRef $tempText
# Invalid element indexes
cat > $tempFilt <<EOF
meta badElem element(pl, -97);
print "[badElem]";
EOF
set +e
${tools_dir}/grib_filter $tempFilt $input > $tempText 2>&1
status=$?
set -e
[ $status -ne 0 ]
grep -q "Invalid element.*Value must be between 0 and 95" $tempText
cat > $tempFilt <<EOF
meta badElem element(pl, 197);
print "[badElem]";
EOF
set +e
${tools_dir}/grib_filter $tempFilt $input > $tempText 2>&1
status=$?
set -e
[ $status -ne 0 ]
grep -q "Invalid element.*Value must be between 0 and 95" $tempText
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# Access a double array
input=$ECCODES_SAMPLES_PATH/sh_ml_grib2.tmpl
cat > $tempFilt <<EOF
meta elemZ element(values, -1);
print "Last value as a double = [elemZ:d]";
EOF
${tools_dir}/grib_filter $tempFilt $input
cat > $tempFilt <<EOF
meta badElem element(values, 100000);
print "[badElem:d]";
EOF
set +e
${tools_dir}/grib_filter $tempFilt $input
status=$?
set -e
[ $status -ne 0 ]
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# Encode a single double element in an array
input=$data_dir/sample.grib2
cat > $tempFilt <<EOF
print "Before: [min=] [max=]";
transient avg1 = avg;
transient max1 = max;
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meta elemN element(values, -1);
assert( elemN < 301 );
print "Last elem was: [elemN:d]";
set elemN = 312; # Pass in an integer. Should call pack_double
print "Last elem now: [elemN:d]";
print "After: [min=] [max=]";
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assert( elemN > 310 );
assert ( avg > avg1 );
assert ( max > max1 );
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write;
EOF
${tools_dir}/grib_filter -o $tempGrib $tempFilt $input
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# Clean up
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rm -f $tempRef $tempText $tempFilt $tempGrib