Draw graphics

chat.sh

#!/usr/bin/env bash

# draw image and open chart for memory real
# and virtual usage

set e

FILE=measures.csv;
SCALE=1048576

gnuplot <<- EOF
				set parametric
				set xlabel "Time"
				set terminal png size 1280,800
				set ylabel "Memory (gb)"
				set title "Memory usage"
				set datafile separator ","
				set y2tics 1
				set ytics 1
				set my2tics 10
				set mytics 10
				set term png
				set ytics nomirror
				set output "${FILE}.png
				const=3
				set grid ytics mytics
				set key autotitle columnhead
				plot '${FILE}' using 1:(\$2/$SCALE) with line, '${FILE}' using 1:(\$3/$SCALE) with line,'${FILE}' using 1:(\$4/100) with line
EOF

open "${FILE}.png"