/usr/share/basemap/data/testdatumfile is in python-mpltoolkits.basemap-data 1.0.7+dfsg-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# Script to do some testing of various transformations depending on datum
# files that are not always available.
#
#
EXE=$1
usage()
{
echo "Usage: ${0} <path to 'cs2cs' program>"
echo
exit 1
}
if test -z "${EXE}"; then
EXE=../src/cs2cs
fi
if test ! -x ${EXE}; then
echo "*** ERROR: Can not find '${EXE}' program!"
exit 1
fi
echo "============================================"
echo "Running ${0} using ${EXE}:"
echo "============================================"
OUT=td_out
#EXE=../src/cs2cs
#
echo "doing tests into file ${OUT}, please wait"
rm -f ${OUT}
#
echo "##############################################################" >> ${OUT}
echo 1st through ntv1, 2nd through conus >> ${OUT}
#
$EXE +proj=latlong +ellps=clrk66 +nadgrids=ntv1_can.dat,conus \
+to +proj=latlong +datum=NAD83 \
-E >>${OUT} <<EOF
111d00'00.000"W 44d00'00.000"N 0.0
111d00'00.000"W 39d00'00.000"N 0.0
EOF
echo "##############################################################" >> ${OUT}
echo As above, but without ntv1 everything goes through conus file. >> ${OUT}
#
$EXE +proj=latlong +ellps=clrk66 +nadgrids=conus \
+to +proj=latlong +datum=NAD83 \
-E >>${OUT} <<EOF
111d00'00.000"W 44d00'00.000"N 0.0
111d00'00.000"W 39d00'00.000"N 0.0
EOF
echo "##############################################################" >> ${OUT}
echo Test MD used where available >> ${OUT}
#
$EXE +proj=latlong +ellps=clrk66 +nadgrids=MD,conus \
+to +proj=latlong +datum=NAD83 \
-E >>${OUT} <<EOF
79d58'00.000"W 37d02'00.000"N 0.0
79d58'00.000"W 36d58'00.000"N 0.0
EOF
#
$EXE +proj=latlong +ellps=clrk66 +nadgrids=conus \
+to +proj=latlong +datum=NAD83 \
-E >>${OUT} <<EOF
79d58'00.000"W 37d02'00.000"N 0.0
79d58'00.000"W 36d58'00.000"N 0.0
EOF
#
echo "##############################################################" >> ${OUT}
echo "Test that we use grid shift files even if we are right on the" >> ${OUT}
echo "edge or even a wee bit outside (#141)." >> ${OUT}
#
# Our test points are (1) right on mesh corner, (2) outside but within
# epsilon (3) inside a bit (4) outside by more than epsilon
#
$EXE +proj=latlong +ellps=WGS84 +nadgrids=ntf_r93.gsb \
+to +proj=latlong +datum=WGS84 \
-E -f "%.12f" >>${OUT} <<EOF
-5.5 52.0
-5.5000000000001 52.0000000000001
-5.4999 51.9999
-5.5001 52.0
EOF
#
$EXE +proj=latlong +datum=WGS84 \
+to +proj=latlong +ellps=WGS84 +nadgrids=ntf_r93.gsb \
-E -f "%.12f" >>${OUT} <<EOF
-5.5 52.0
-5.5000000000001 52.0000000000001
-5.4999 51.9999
-5.5001 52.0
EOF
#
##############################################################################
# Done!
# do 'diff' with distribution results
echo "diff ${OUT} with ${OUT}.dist"
diff -b ${OUT} ${OUT}.dist
if [ $? -ne 0 ] ; then
echo ""
echo "PROBLEMS HAVE OCCURED"
echo "test file ${OUT} saved"
echo
exit 100
else
echo "TEST OK"
echo "test file ${OUT} removed"
echo
/bin/rm -f ${OUT}
exit 0
fi
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