1, lines bold
x = 0: 0.1: 8 * pi;
y = sin (x);
plot(x,y,'LineWidth',5)
2, the curve becomes a break point
X=80:0.001:140;
>> Y=spline(x,y,X);
>> plot(X,Y)
3, the coordinate values set font size
set (clearly, "trickle", 20)
4, while drawing curves and scatter charts, and diagrams beautification
>>plot(x, y1, 'ok-', 'linewidth', 1.1, 'markerfacecolor', [36, 169, 225]/255)
>> set(gca, 'linewidth', 1.1, 'fontsize', 16, 'fontname', 'times')
>> xlabel('Input voltage(kv)')
>> ylabel('I/I0')
>> title('d=30mm')
>> print('i_i0_d.png','-dpng')