i have an array like A= [ 51 22 33 56 67 78 .....] and i have one more matrix of size[1000 300] i need to remove A[] values in matrix.

i.e in first coloum of matrix i need to remove first 51 and last 51 values in second coloum i need to remove first 22 and last 22 values in third coloum i need remove first 33 and last 33 values....

Answer 1

[Akira Agata]

I think one possible solution would be like this.

A = [51 22 33 56];
B = rand(1000, 4);

% Remove first A(kk) and last A(kk) elements from kk-th column of B (for kk = 1 to 4)
for kk = 1:numel(A)
  B([1:A(kk), end-A(kk)+1:end],kk) = NaN;
end

[parameshwarisimmalu]

i need form single row after doing this and need to remove Nan valus

Answer 2

[M]

you can use something like

M=magic(5);
A=[1 2 1 0 3];
res=cell(length(A),1);
for i=1:length(A)
  res{i}=M(A(i)+1:end-A(i),i);
end

which gives

M =

    17    24     1     8    15
    23     5     7    14    16
     4     6    13    20    22
    10    12    19    21     3
    11    18    25     2     9

res =

5×1 cell array

    {3×1 double}
    {[       6]}
    {3×1 double}
    {5×1 double}
    {0×1 double}

[parameshwarisimmalu]

thank you sir how to convert this cell in to array