#!/bin/sh

if ! which gnuplot > /dev/null 2>&1
then
    echo "gnuplot not found - skipping graph creation" >&2
    exit 1
fi

tail -n +4 ../postProcessing/probes/0/U  | \
    tr -s " " | tr -d '(' | cut -d " " -f1-2 > ../Numerical.dat

gnuplot<<EOF
    set terminal postscript eps color enhanced "Helvetica,20"
    set output "planarPoiseuille.eps"
    set xlabel "Time / [s]" font "Helvetica,24"
    set ylabel "Velocity / [m/s]" font "Helvetica,24"
    set grid
    set key right top
    set xrange [0:25]
    set yrange [0:8]
    plot \
        "../Numerical.dat" t "OpenFOAM (every 100 pts)" \
            with linespoints pointinterval 100 lt 1 pt 6 ps 1.5, \
        "../WatersKing.dat" with lines t "Analytical" lt -1
EOF

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