How do you arrange a column vector so it has the same shape of a predefined matrix with some NaN elements??

Hi :)

I have a mxn Matrix, say A. Some of its elements are empty, something like this:

A=[1,  2,  3,  4; 
   NaN,NaN,5,  6; 
   7,  8,  NaN,NaN];

I also have a column vector, say B. Suppose it also has 8 numerical elements, something like this:

B=[20;21;22;23;24;25;26;27]; % Column vector.

I'm stuck trying to arrange B as a new matrix R, but I want R to have the same format (shape) as A, so it looks something like this:

R=[20,  21,  22,  23; 
   NaN, NaN, 24,  25; 
   26,  27,  NaN, NaN];

Any help with this is appreciated. Thanks in advance.

Answer 1

[Star Strider]

This works:

A=[1,2,3,4; NaN,NaN,5,6; 7,8,NaN,NaN];
B=[20;21;22;23;24;25;26;27];
R = NaN(size(A'));
R(~isnan(A')) = B;
R = R';

[Jasiel]

Hi Star Strider, it works just fine :) thanks a lot for the help.

[Star Strider]

My pleasure!

That was a fun and interesting challenge!