Insert missing values in specified positions and use for loop

Hi everybody could anyone help me in my problem: i have an array with known missed values in known places . I want to insert these values in the specified positions and do it for many arrays. Example a=[2 4 6 3 3 5 3 4 1 0 0 0 0] Li=[2 8 10 12] %locations of values in array Val=[6 7 8 9] Solution should be Sol=[2 6 4 6 3 3 5 7 3 8 4 9 1] Also how to apply this in for loop for multiple arrays Thanks in advance

Answer 1

[KSSV]

This problem is dicussed multiple times....you can checki there in this useful link:

https://in.mathworks.com/matlabcentral/answers/48942-insert-element-in-vector

[Hamdia Mansour]

Thanks KSSV but the link you provide is assigning one value in one location but here I found a difficult in assigning multiple values and in multiple arrays For example a_matrix=[1 2 3 4 5 6 7 8 9; 3 4 1 2 5 6 7 2 8; 9 8 1 2 5 6 7 2 3]; I want to insert [ 6 7 8 9] in column [2 8 10 12] So the new matrix will be a_newmatrix= [1 6 2 3 4 5 6 7 7 8 8 9 9; 3 6 4 1 2 5 6 7 7 8 2 9 8; 9 6 8 1 2 5 6 7 7 8 2 9 3] If you could and don't mind helping me.

[KSSV]

a=[2 4 6 3 3 5 3 4 1 0 0 0 0] ; 
Li=[2 8 10 12] %locations of values in array 
Val=[6 7 8 9] ;
Sol=[2 6 4 6 3 3 5 7 3 8 4 9 1] ;
iwant = zeros(size(a)) ;   % initlialize the required array 
iwant(Li) = Val ; 
% Mkae logical indices 
idx = logical(zeros(size(a))) ; 
idx(Li) = 1 ; 
iwant(~idx) = a(a~=0) ; 

[Hamdia Mansour]

Thanks KSSV for your time and reply. It works very good for the array but I still found problem for the matrix. I write this for loop to solve it for i=1:3 %3 is no of rows in matrix for j=1:4 % 4 is length of li iwant(I,li(j))=val(j); Idx(i)=logical(zeros(sizeallol(i))); idx(i,li(j))=1 %%%the problem in the following line %%% iwant(~idx)=a(a~=0) %how to make it inside loop end end Thanks in advance and sorry for little knowledge in matlab

[KSSV]

a = [1 2 3 4 5 6 7 8 9; 3 4 1 2 5 6 7 2 8; 9 8 1 2 5 6 7 2 3];
val = [ 6 7 8 9] ;
col = [2 8 10 12] ; 
b = [1 6 2 3 4 5 6 7 7 8 8 9 9; 3 6 4 1 2 5 6 7 7 8 2 9 8; 9 6 8 1 2 5 6 7 7 8 2 9 3] ;
[m,n] = size(a) ; p = length(col) ; 
iwant = zeros(m,n+p) ; 

for i = 1:m
  iwant(i,col) = val ;
  % Make logical indices
  idx = logical(zeros(1,n+p)) ;
  idx(col) = 1 ;
  iwant(i,~idx) = a(i,:) ;
end

[Hamdia Mansour]

Thank you very much for your help