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#!/bin/sh
usage="$0 hocr|prob graph.png"
test $# -ne 2 && echo "$usage" && exit 1
t=`mktemp`
# TODO: the line_1_ part is changes formatting from hocr line naming to
# line numbers. make it work for .prob stuff too.
avg-lines -nosort "$1" | awk -F ':' '{printf("%s\t%s\n", $1, $2)}' | sed 's/%//g' | sed 's/[^ ]* line_1_//g' > "$t"
gp=`mktemp`
printf 'set style data lines\n' >> "$gp"
printf 'set title "Line confidences for %s"\n' "$1" >> "$gp"
printf 'set xlabel "Line Number"\n' >> "$gp"
printf 'set ylabel "Average confidence"\n' >> "$gp"
printf 'unset key\n' >> "$gp"
printf 'set terminal png truecolor size 1920,1080\n' >> "$gp"
printf 'set output "%s"\n' "$2" >> "$gp"
printf 'plot "%s"\n' "$t" >> "$gp"
printf 'quit\n' >> "$gp"
gnuplot "$gp"
rm -f "$t" "$gp"
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