【答案】应助回帖

x = [0.768;
0.711;
0.685;
0.671;
0.659;
0.657;
0.655;
0.654;
0.653;
0.654];
y = [4.584;
4.375;
4.234;
4.128;
4.041;
3.972;
3.913;
3.861;
3.815;
3.774];
opts = fitoptions('Method','Nonlinear','Normalize','On');
opts.StartPoint =  [1 0.1];
ftype = fittype('a+b*log10(1-b*x)+(1-b)*log10(1-b*x+x)','options',opts);
[fresult,gof] = fit(x,y,ftype)
plot(x,fresult(x),'or-')
hold on;
plot(x,y,'*')

12楼: Originally posted by dbb627 at 2011-11-28 20:15:20:
legend('拟合','原数据')
xlabel('C^n')

14楼: Originally posted by dbb627 at 2011-11-28 20:31:22:
xlabel('lg(r/C_m)')

16楼: Originally posted by dbb627 at 2011-11-28 21:34:56:
plot命令前加一句
box off

17楼: Originally posted by 飞也如铃 at 2011-11-28 21:57:28:
神奇，神奇，太神奇了，哈哈，菜鸟遇上高手了，谢谢哈。

18楼: Originally posted by baby_wolf at 2011-11-30 09:37:25:
matlab和origin是两种截然不同的数据处理软件，matlab以命令为主，几乎绘制的图形中每一个元素都可以自定义；origin则不同，origin你主要是在面板里点鼠标进行设置。

matlab中，你可以只用键盘就能完成数据处 ...