gmt-fork/doc/scripts/GMT_App_N_1.sh

#!/usr/bin/env bash
#
#	Makes the inset for Appendix N (custom symbols)
#
grep -v '^#' "${GMT_SOURCE_DIR}"/share/custom/gmt_custom_symbols.conf | $AWK '{print $1}' > tt.lis
n=$(cat tt.lis | wc -l)

# Because of text, the first page figure will contain less symbol rows than
# subsequent pages.

width=0.85
n_cols=6
n_rows=7
n_rows_p1=7
fs=9
dy=0.15

n_pages=$(gmt math -Q $n $n_cols DIV CEIL $n_rows_p1 SUB 0 MAX $n_rows DIV CEIL 1 ADD =)

p=0
s=0
while [ $p -lt $n_pages ]; do
	p=$(expr $p + 1)
	if [ $p -eq 1 ]; then
		max_rows=$n_rows_p1
	else
		max_rows=$n_rows
	fi

	n_rows_to_go=$(gmt math -Q $n $s SUB $n_cols DIV CEIL $max_rows MIN =)
	H=$(gmt math -Q $n_rows_to_go 1 $dy ADD MUL =)
	rm -f tt.lines tt.symbols tt.text tt.bars
	touch tt.lines tt.symbols tt.text tt.bars
	c=0
	while [ $c -lt $n_cols ]; do
		c=$(expr $c + 1)
		cat << EOF >> tt.lines
> vertical line
$c	0
$c	$H
EOF
	done
	r=0
	while [ $r -lt $n_rows_to_go ]; do			# Loop over the rows that will fit this page
		r=$(expr $r + 1)
		yt=$(gmt math -Q $n_rows_to_go $r SUB 1.0 $dy ADD MUL 0.5 $dy MUL ADD =)
		ys=$(gmt math -Q $yt 1.0 $dy ADD 0.5 MUL ADD =)
		ysb=$(gmt math -Q $ys 0.5 SUB =)
		ytb=$(gmt math -Q $yt 0.5 $dy MUL SUB =)
		cat << EOF >> tt.lines
> base of symbol line
0	$ysb
$n_cols	$ysb
> base of text line
0	$ytb
$n_cols	$ytb
EOF
		c=0
		while [ $c -lt $n_cols ] && [ $s -lt $n ]; do	# Loop over this row, but watch for end of symbols
			c=$(expr $c + 1)
			s=$(expr $s + 1)
			x=$(gmt math -Q $c 1 SUB 0.5 ADD =)
			symbol=$(sed -n ${s}p tt.lis)
			echo "$x $ys k${symbol}" >> tt.symbols
			name=$(echo $symbol | tr 'a-z' 'A-Z')
			echo "$x $yt $name" >> tt.text
			echo "$x $yt $width $dy" >> tt.bars
		done
	done
	gmt begin GMT_App_N_$p
	gmt set GMT_THEME cookbook
	gmt plot -R0/$n_cols/0/$H -Jx${width}i tt.lines -Wthick -B0
	gmt plot -S${width}i -W0.5p tt.symbols  -Ggray
	gmt plot -Sri -Gblack tt.bars
	# Shorten the spelling of QR_TRANSPARENT to QR_TRANSP to fit the figure
	sed -e 's/TRANSPARENT/TRANSP/' < tt.text | gmt text -F+f${fs}p,white
	gmt end show
done