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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 and prob-avgpgconf files being present,
which are 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
set title "Book Confidence for %s"
set xlabel "Page Number"
set ylabel "Page confidence"
set mxtics
set terminal png truecolor size 4600,1700
set output "%s"
plot "%s" using 1:2 with lines title "Tesseract",\\
"" using 1:2:(sprintf("%%d", $1)) with labels point pt 2 notitle,\\
"%s" using 1:2 with lines title "Ocropus",\\
"" using 1:2:(sprintf("%%d", $1)) with labels point pt 2 notitle
quit
' "$b" "$1/${b}_bookgraph.png" "$t" "$1/prob-avgpgconf" >> "$gp"
gnuplot "$gp"
rm -f "$t" "$gp"
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