searching for vector values in a matrix

Hi, I have a vector with 3 specific values and I want to find their indices in a matrix.

[James Tursa]

What are the dimensions of the matrix? Do the values have to be next to each other in the same row or column?

Answer 1

[Mohammad Abouali]

% Creating a sample matrix
yourMatrix=reshape(1:15,5,3)

yourMatrix =

       1     6    11
       2     7    12
       3     8    13
       4     9    14
       5    10    15

% Creating a sample vector with three values.
yourVector=[1,7,14];

% Now getting the row and cols of those values.
[rows, cols]=ind2sub( size(yourMatrix), ...
                      arrayfun(@(v) find(yourMatrix==v), ...
                               yourVector(:)) )

rows =

       1
       2
       4

cols =

       1
       2
       3

The rows and cols of 1,7,14 (the three specific values) are provided. If you are looking only for linear index number then just run:

linIndex=arrayfun(@(v) find(yourMatrix==v), yourVector(:))

[Ahmed Alnahdi]

ماتقصر :)

Answer 2

[Image Analyst]

If yourVector is an integer valued vector or a floating point vector with values that are multiples or divisors of 2, then try

firstIndex = find(yourVector == firstSpecificValue);
secondIndex = find(yourVector == secondSpecificValue);
thirdIndex = find(yourVector == thirdSpecificValue);