gfortran -o f90_elas f90_elas.f90
./f90_elas > _dat_elastica.csv

# ********************************************
# Drawing by GMT
# ********************************************
xlabel="Displacement  ( u/L or v/L )"
ylabel="Load  ( P/P@-cr@- )"
# ===============================
# Making of batch file for legend
# ===============================
gmt set FONT_ANNOT_PRIMARY 10
gmt set MAP_ANNOT_OFFSET_PRIMARY 0.3c
gmt set FONT_LABEL 10p
gmt set MAP_LABEL_OFFSET 0.3c
gmt set MAP_TICK_LENGTH_PRIMARY 0.0c
# ===============================
# Plotting (no hinges)
# ===============================
range=-2/1/0/10
scale=10/12
xga=g0.5a0.5
yga=g1a1
inp_1=_dat_elastica.csv
inp_2=_dat_scl_10.csv
fig=fig_elas.eps
gmt psbasemap -R$range -JX$scale -Bx$xga+l"$xlabel" -By$yga+l"$ylabel" -BWSen -P -X5 -Y6 -K > $fig
# *** Elastica (Line) ***
awk 'BEGIN{FS=","}{if(2<=NR)print $2,$3}' $inp_1 | gmt psxy -: -R -J -B -W1 -P -O -K >> $fig
awk 'BEGIN{FS=","}{if(2<=NR)print $2,$4}' $inp_1 | gmt psxy -: -R -J -B -W1 -P -O -K >> $fig
# *** Calculation (Symbol) ***
awk 'BEGIN{FS=","}{if(1<=NR&&(-$1/411.07<9))print -$1/411.07,$2/1000}' $inp_2 | gmt psxy -: -R -J -SC0.15 -G255 -W1 -N -P -O -K >>$fig
awk 'BEGIN{FS=","}{if(1<=NR&&(-$1/411.07<9))print -$1/411.07,$3/1000}' $inp_2 | gmt psxy -: -R -J -ST0.15 -G255 -W1 -N -P -O -K >>$fig
#
awk 'BEGIN{FS=","}{if(1<=NR){yy=$2;xx=$3}}END{printf "%g %g 10 0 BC u/L",xx,yy+0.1}' $inp_1 | gmt pstext -R -J -F+f+a+j -N -P -O -K >> $fig
awk 'BEGIN{FS=","}{if(1<=NR){yy=$2;xx=$4}}END{printf "%g %g 10 0 BC v/L",xx,yy+0.1}' $inp_1 | gmt pstext -R -J -F+f+a+j -N -P -O -K >> $fig
# *** marginal note ***
echo "-1.9 10.2 10 0 BL Elastica (solid line is Elastica theoy)" | gmt pstext -R -J -F+f+a+j -N -P -O >> $fig