Accessing data in matfile.

Question

0 个投票

I have a matrix called miu. And the size of miu is ::: 262144x1 double

To save the memory purpose I have used:

    miu =matfile('miu_64cube_detect256multiply256.mat');
    miu.Properties.miu(ind)    %% To access the data I have used the line

Error Message: Unrecognized method, property, or field 'miu' for class 'matlab.io.matfile.Properties'.

Can anyone give me some clarification and probable solution regarding this problem?

Thank You....

4 个评论
显示 2更早的评论隐藏 2更早的评论

Rik 2021-7-6

在 MATLAB Online 中打开

miu =matfile('miu_64cube_detect256multiply256.mat');
Nvoxels= 64*64*64;
for j = 1:Nvoxels
        len = cell2mat(length_ijk(j));
        ind = cell2mat(index_ijk(j));
        atten(j) =  exp(-sum(miu(ind).*len));
end
Unrecognized function or variable 'length_ijk'.

dpb 2021-7-6

在 MATLAB Online 中打开

Which doesn't do anything at all with the matfile object to address it and create the problem.

But, you don't address the Properties of the object, but the object itself with the variable name and index -- and, you don't have a LHS to store the result.

miu =matfile('miu_64cube_detect256multiply256.mat');
value=miu.miu(ind);                                     % return on element of variable miu inside the matfile object

请先登录，再进行评论。

请先登录，再回答此问题。

Follow Question