How to multiply arrays in struct file with a variable?

Question

Ahmad Hasnain 2018-10-1

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回答： Ahmad Hasnain 2018-10-1

I have four variables that are known to me, i.e. 'high', 'low' and 'a' and 'b'. I have a mat file, which contains a lot of arrays. I successfully load the array I want. But I want to multiply the arrays with variable 'a' and 'b'.

filename1 = sprintf('Zy%d', low);
c = a * load('Z.mat', filename1);
filename2 = sprintf('Zy%d', high);
d = b * load('Z.mat', filename2);

But I get this answer:

Undefined operator '*' for input arguments of type 'struct'.

How do I multiply the variable with these loaded arrays?

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Answer 1

Rik 2018-10-1

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The load functions loads to a struct, where each variable is a field, even when you specify only a single variable. The code below should do the trick.

filename1 = sprintf('Zy%d', low);
temp=load('Z.mat', filename1);
c = a * temp.(filename1);
filename2 = sprintf('Zy%d', high);
temp=load('Z.mat', filename2);
d = b * temp.(filename2);