matlab plot

radix=size(upos,1);

%双坐标轴绘制
[AX,H1,H2] = plotyy(x,spos_improved(1:radix,1), x, dis(1:radix,1), 'plot');

set(gca,'fontsize',30)
set(get(AX(1),'Ylabel'),'String','Non-zero position', 'fontsize',30,'fontname','times new roman') 

set(get(AX(2),'Ylabel'),'String','Discrepancy between u and upos', 'fontsize',30,'fontname','times new roman')

%设置字体，设置x轴标签
set(AX(2), 'fontsize', 30)
xlabel('Iteration round','FontSize',30)

hold on
%plot(x,upos(1:radix,1),x,vpos(1:radix,1),x,rpos(1:radix,1),x,spos(1:radix,1),x,upos_improved(1:radix,1), 'm*',x,vpos_improved(1:radix,1), 'm*',x,rpos_improved(1:radix,1), 'm*')

%在同一张图上绘制多个曲线
plot(x,upos(1:radix,1),x,vpos(1:radix,1),x,rpos(1:radix,1),x,spos(1:radix,1),x,upos_improved(1:radix,1),x,vpos_improved(1:radix,1),x,rpos_improved(1:radix,1))
ylim([0 5000]) %限定y坐标轴范围

%
%ylabel('Non-zero position','FontSize',16)
%title('Plot of u, v, r, s  non-zero position changing, and curve approximation using upos, vpos, rpos, spos')