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Added scripts to grab EXIF GPS data and create WPT GPX

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Brandon Rozek 2022-06-16 20:45:20 -04:00
parent 220f2b7571
commit 980ac04f51
3 changed files with 97 additions and 0 deletions
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27
LLA2WPT.sh Executable file
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#!/bin/sh
set -o errexit
set -o nounset
set -o pipefail
show_usage() {
echo "Usage: LLA2WPT.sh [LAT] [LON] [ALT] [?NAME]"
exit 1
}
# Check argument count
if [ "$#" -ne 3 ] | [ "$#" -ne 4 ]; then
show_usage
fi
LAT="$1"
LON="$2"
ALT="$3"
NAME=${4-""}
echo "<wpt lat=\"$LAT\" lon=\"$LON\">"
echo -e "\t<ele>$ALT</ele>"
echo -e "\t<name>$4</name>"
echo "</wpt>"

46
getLLA.sh Executable file
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#!/bin/sh
set -o errexit
set -o nounset
set -o pipefail
show_usage() {
echo "Usage: getLLA.sh [imagefile]"
exit 1
}
# Check argument count
if [ "$#" -ne 1 ]; then
show_usage
fi
# Check that relevant command exist
if ! command -v identify > /dev/null; then
echo "Command identify from imagemagick not found. Exiting..."
fi
IMAGE_FILE="$1"
LAT=$(identify -format "%[EXIF:GPSLatitude]\n" "$IMAGE_FILE")
LAT_DIR=$(identify -format "%[EXIF:GPSLatitudeRef]\n" "$IMAGE_FILE")
LON=$(identify -format "%[EXIF:GPSLongitude]\n" "$IMAGE_FILE")
LON_DIR=$(identify -format "%[EXIF:GPSLongitudeRef]\n" "$IMAGE_FILE")
ALT=$(identify -format "%[EXIF:GPSAltitude]\n" "$IMAGE_FILE")
DegreesToDecimal() {
L0=$(echo "$1" | cut -d "," -f 1)
L1=$(echo "$1" | cut -d "," -f 2)
L2=$(echo "$1" | cut -d "," -f 3)
echo "scale=6;$L0 + $L1/60 + $L2/3600" | bc
}
LAT_DEC=$(DegreesToDecimal "$LAT")
LON_DEC=$(DegreesToDecimal "$LON")
ALT_DEC=$(echo "scale=6;$ALT" | bc)
LAT_PREFIX=$([ $LAT_DIR == "S" ] && echo "-" || echo "")
LON_PREFIX=$([ $LON_DIR == "W" ] && echo "-" || echo "")
echo "$LAT_PREFIX$LAT_DEC"
echo "$LON_PREFIX$LON_DEC"
echo "$ALT_DEC"

24
getWPT.sh Executable file
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#!/bin/sh
set -o errexit
set -o nounset
set -o pipefail
show_usage() {
echo "Usage: getWPT.sh [imagefile] [?name]"
exit 1
}
# Check argument count
if [ "$#" -ne 1 ]; then
show_usage
fi
getLLA="$(dirname $0)/getLLA.sh"
LLA=$("$getLLA" "$1")
IMAGE_NAME=$(basename "$1")
NAME_ARG=${2-""}
NAME=$([ "$NAME_ARG" != "" ] && echo "$NAME_ARG" || echo "$IMAGE_NAME")
echo -e "$LLA\n$NAME" | xargs $(dirname $0)/LLA2WPT.sh