# spiral_commands.txt # set term png set output "spiral.png" # # Add titles and labels. # set xlabel "<--- X --->" set ylabel "<--- Y --->" set title "Spiral velocity flow" unset key # # Add grid lines. # set grid set size ratio -1 # # Timestamp the plot. # set timestamp plot 'spiral_data.txt' using 1:2:3:4 with vectors \ head filled lt 2 linecolor rgb "blue" quit