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#!/bin/sh
usage="$0 bookdir
Creates a graph showing the average confidence of each page in a book.
This relies on the hocr-avgpgconf file being present, which is generated
by the allpgsconf.sh script"
test $# -ne 1 && echo "$usage" && exit 1
! test -f "$1/hocr-avgpgconf" && echo "No $1/hocr-avgpgconf file found; run allpgsconf.sh before running this" && exit 1
! test -f "$1/prob-avgpgconf" && echo "No $1/prob-avgpgconf file found; run allpgsconf.sh before running this" && exit 1
t=`mktemp`
# NOTE: this expects book file naming to be in the format nnnn_sometext
sed 's/_[^\t]*//g' < "$1/hocr-avgpgconf" > "$t"
b=`basename "$1"`
gp=`mktemp`
printf 'set style data lines\n' >> "$gp"
printf 'set title "Book Confidence for %s"\n' "$b" >> "$gp"
printf 'set xlabel "Page Number"\n' >> "$gp"
printf 'set ylabel "Page confidence"\n' >> "$gp"
printf 'set mxtics\n' >> "$gp"
printf 'set terminal png truecolor size 4600,1700\n' >> "$gp"
printf 'set output "%s"\n' "$1/bookgraph.png" >> "$gp"
printf 'plot "%s" using 1:2 with lines title "Tesseract",\\\n' "$t" >> "$gp"
printf ' "" using 1:2:(sprintf("%%d", $1)) with labels point pt 2 notitle,\\\n' >> "$gp"
printf ' "%s" using 1:2 with lines title "Ocropus",\\\n' "$1/prob-avgpgconf" >> "$gp"
printf ' "" using 1:2:(sprintf("%%d", $1)) with labels point pt 2 notitle\n' >> "$gp"
printf 'quit\n' >> "$gp"
gnuplot "$gp"
rm -f "$t" "$gp"
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