Question

I have a 2d matrix Ac(yr,j).
I want it to compare each value of it with another 1D array and store the value of array for which absolute minimum is coming.

for yr=1:32,  
   for j=1:12,  
       for in=1.5:1:32.5,  
            actin=Ac(yr,j);  
            kar(in-0.5)=abs(in-actin);  
            dab(yr,j)=min(kar(kar>=0));              
       end         
   end  
end  

I’m able to find the least positive value but not the value of in for which it is coming.

Answer 1

You need to call max as shown below in order to get the index instead of the value.

[~, dab(yr,j)] = min(kar(kar>=0));

In order to get rid of the nested loops you could try arrayfun. Define the operation to be performed on every array element.

function [index] = myMinFunction(value, data)
    [val, index] = min(abs(data - value));
end

Execute the defined operations.

dab = arrayfun(@(x)myMinFunction(x, in), Ac)