set xrange[1:11]
set yrange[0:10]
set zeroaxis lt -1 lw 1

unset tics


set style arrow 1 size character 2,20 filled linewidth 3
set arrow 1 from 6,1 to 6,8 arrowstyle 1     # B_0
    set label "B_0" at 6,8.3 center font "Arial,12"


set style arrow 2 size character 2,20 filled linewidth 5
set arrow 2 from 6.2,5 to 8,5 arrowstyle 2     # B_1
    set label "v_1" at 8.3,5  font "Arial,12"
set arrow 3 from 5.8,4.8 to 4.4,2.8 arrowstyle 2     # J
    set label "J_1" at 4.1,2.5  font "Arial,12"
set arrow 4 from 5.8,5 to 4,5 arrowstyle 2     # J*B_0
    set label "magnetic tension" at 4,5.5  center font "Arial,14"


set style arrow 3 size character 2,20 filled linewidth 1
set arrow 5 from 9,3 to 9,4.3 arrowstyle 3     #z 
    set label "z" at 9,4.5  font "Arial,12"
set arrow 6 from 9,3 to 10,3 arrowstyle 3  #y
    set label "y" at 10.2,3  font "Arial,12"
set arrow 7 from 9,3 to 8.4,2 arrowstyle 3     # x
    set label "x" at 8.3,1.8  center font "Arial,12"


plot "coordinate.txt" using 1:2 notitle


set terminal png
set output "CO3-2.png"
replot