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