使用 reshape 函数出错
我的程序是：clear
load lxy.dat;
=size(lxy);
x=lxy(:,1);
y=lxy(:,2);
f=lxy(:,3);
z=reshape(f,m,n)
surf(x,y,z)
我的dat文件是：
0.260257 0.016201 500000.000000
0.260179 0.015014 500000.000000
0.259818 0.013084 500000.000000
0.259635 0.010988 500000.000000
0.259792 0.008933 500000.000000
0.259902 0.006942 500000.000000
0.259969 0.004968 500000.000000
0.260000 0.002989 500000.000000
但运行后就是出现
??? Error using ==> reshape
To RESHAPE the number of elements must not change.
请知道的大哥大姐告诉我一下，如何修改!!!谢谢！！
[ 本帖最后由 eight 于 2007-8-2 13:11 编辑 ] z=reshape(f,m,n),要求f中元素个数等于mn个.
[ 本帖最后由 w89986581 于 2007-8-1 12:36 编辑 ] RESHAPE Change size.
RESHAPE(X,M,N) returns the M-by-N matrix whose elements
are taken columnwise from X.An error results if X does
not have M*N elements.
RESHAPE(X,M,N,P,...) returns an N-D array with the same
elements as X but reshaped to have the size M-by-N-by-P-by-...
M*N*P*... must be the same as PROD(SIZE(X)).
RESHAPE(X,) is the same thing.
RESHAPE(X,...,[],...) calculates the length of the dimension
represented by [], such that the product of the dimensions
equals PROD(SIZE(X)). PROD(SIZE(X)) must be evenly divisible
by the product of the known dimensions. You can use only one
occurrence of [].
In general, RESHAPE(X,SIZ) returns an N-D array with the same
elements as X but reshaped to the size SIZ.PROD(SIZ) must be
the same as PROD(SIZE(X)).
去掉 z=reshape(f,m,n); 将surf(x,y,z)改为plot3(x,y,z).
若要进行曲面拟合，help griddata；也可以用样条曲面拟合．
－－－另：你的数据似乎给得太少．
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