figure;
x=[200520062007200820092010];
y2=[459065380963184721238194188833];
a=polyfit(x,y2,1);
xi=2005:1:2010;
yi=polyval(a,xi);
plot(x,y2,\'go\',\'MarkerEdgeColor\',\'k\',\'MarkerFaceColor\',\'g\',\'MarkerSize\',6);
xlabel(\'年份\');
ylabel(\'GDP\');
axis([200520104500090000])
holdon
plot(xi,yi,\'linewidth\',2,\'markersize\',16)
legend(\'原始数据点\',\'拟合曲线\')
plot(x,y2,\'-r.\')
sprintf(\'Y2=%0.5g*X(%0.5g)\',a(1),a(2)) |
