Get row no where comparison gives 1

Hey i have a cell array:

     A={[4x9 cell],[3x9 cell],[2x9 cell]}
   A{1,1}= [1,-0.03,0.1,1.3,0,0.23,1,0,0.2; 1,0.6,0.14,2,0,0.6,0.6,0,0.6; 1,-0.15,0,1.4,0,0.35,1,0,0.38; 2,-0.2,0.18,3,0,0.4,0,0,0.4];  similarly values for A{1,2} and A{1,3}

I have compared each row of A{1,1} with every other row in A{1,1} using

   A(1:end-1,:)<A(2:end,:)

Now what I want to find is that how can I get the row no's which are being compared at a particular time. For example if row 1 and row 2 are being compared how can I get 1 and 2 in result.

I want to store all elements where result of comparison is 1. for example if row 1 and row 4 gives 1 in result then I want to store the row no where the result is 1 ( like 1 and 4 in this example).

please help.

Answer 1

[Walter Roberson]

repmat((1:size(A,1)-1).', 1, size(A,2)) .* (A(1:end-1,:)<A(2:end,:))

which would give you

     0     1     1     1     0     1     0     0     1
     0     0     0     0     0     0     2     0     0
     3     0     3     3     0     3     0     0     3

for whatever good that would do you.

[Tha saliem]

Hey thank you for your answer. Actually I want to get just the row no where comparison is 1. Like if i am comparing row 2 and row 4 and answer is 1. Then i want to store indexes of both these rows.

[Tha saliem]

Like if we just talk about single elements stored in some array. if I compare 2<5 and answer is true. I want rows no of where 2 and 5 are stored in array. So i will apply the same concept to rows.

[Walter Roberson]

Each row comparison gives a vector of results. When you are "comparing row 2 and row 4 and answer is 1", what does that mean? Does it mean you want 1 if all of the elements of row 2 are less than the corresponding elements in row 4? Does it mean you want 1 if at least one of the elements in row 2 is less than the corresponding elements in row 4? Does it mean that you want 1 if the maximum value in row 2 is less than the minimum value in row 4?

[Tha saliem]

Yes it means 1 if all of the elements of row 2 are less than elements of row 4.

[Walter Roberson]

All of the elements of row 2 are less than the corresponding elements of row 4? Or all of the elements of row 2 are less than the minimum of row 4? Or all of the elements of row 2 are less than the maximum of row 4?

[Tha saliem]

All of the elements of row 2 are less than the corresponding elements of row 4

[Walter Roberson]

find( all( A(1:end-1,:)<A(2:end,:), 2) )

[Tha saliem]

Thank you for your time. Actually i have tried using find but how can i get the row no that are being compared at a particular time?

[Walter Roberson]

The output of find() is the row number minus 1, so just add 1.

[Tha saliem]

Thank You so much for helping.