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monitor2885

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[交流] 【求助】线形插值问题已有3人参与

t1=0:1:3;
x=[1,5,3;4,9,6;10,4,15;7,10,5];
x =
   1    5    3
   4    9    6
10    4 15
   7 10    5
t2=0:0.1:3;
for i=1:3
y=spline(t1,x(:,i),t2);
end

我想让x的每一列都按照t2进行插值，结果y是1*31的数组，我要的是y应该是31*3才对，似乎每次循环y都被覆盖了。怎么修改程序呢？谢谢

[ Last edited by monitor2885 on 2010-5-13 at 21:16 ]

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1楼 2010-05-13 19:04:59

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monitor2885(金币+2): 2010-05-13 20:16:27

引用回帖:

Originally posted by change0618 at 2010-05-13 19:24:38:
y(i,: )=spline(t1,x(:,i),t2);

楼上的修改正确最后得结果是：

y=[1 0.823000000000000 0.784000000000000 0.871000000000000 1.07200000000000 1.37500000000000 1.76800000000000 2.23900000000000 2.77600000000000 3.36700000000000 4 4.66300000000000 5.34400000000000 6.03100000000000 6.71200000000000 7.37500000000000 8.00800000000000 8.59900000000000 9.13600000000000 9.60700000000000 10 10.3030000000000 10.5040000000000 10.5910000000000 10.5520000000000 10.3750000000000 10.0480000000000 9.55900000000000 8.89600000000000 8.04700000000000 7;

5 6.37500000000000 7.48000000000000 8.33500000000000 8.96000000000000 9.37500000000000 9.60000000000000 9.65500000000000 9.56000000000000 9.33500000000000 9 8.57500000000000 8.08000000000000 7.53500000000000 6.96000000000000 6.37500000000000 5.80000000000000 5.25500000000000 4.76000000000000 4.33500000000000 4 3.77500000000000 3.68000000000000 3.73500000000000 3.96000000000000 4.37500000000000 5.00000000000000 5.85500000000000 6.96000000000000 8.33500000000000 10;

3 2.31750000000000 1.92000000000000 1.78250000000000 1.88000000000000 2.18750000000000 2.68000000000000 3.33250000000000 4.12000000000000 5.01750000000000 6 7.04250000000000 8.12000000000000 9.20750000000000 10.2800000000000 11.3125000000000 12.2800000000000 13.1575000000000 13.9200000000000 14.5425000000000 15 15.2675000000000 15.3200000000000 15.1325000000000 14.6800000000000 13.9375000000000 12.8800000000000 11.4825000000000 9.72000000000000 7.56750000000000 5];