How to get the smallest difference(Array)

>>The issue i'm having is that if there are two values of equal difference only the closest one is displayed. Can someone please correct my coding.

function[smallestPosition] = FindSmallestElevationChange(i,B)

E = [ 3 6 5 4 7 8 3 ; 5 7 6 2 3 1 7 ; 6 8 5 8 5 4 8 ; 7 4 9 7 6 5 3 ];

 *%B = 3 adjacent values e.g.. if I chose E(10), B = [ 4 2 8 ]
 %the smallest difference should be 4 and 8 which is (1 and 3) respectively
 %since there is a difference of 2 for both of them.*
   E(i);

[c index] = min(abs(B-E(i)));

the output given is only 1(which is 4)

[REVERTED, was edited away by the OP, Jan]

[KSSV]

Please not that....._min_ gives you only minimum value....so output is only one value. What you are expecting?

[KL]

What's the point of uploading that picture? You expect us to read it this way?

[José-Luis]

Where on god's green earth is abs(10-8) equal to abs(10-4)?

[José-Luis]

Let me rephrase. Unless something very basic has changed, there is no way that

 2 == 4

You probably meant E(6) (just dawned on me, I need coffee). If that's the case, my answer should solve your problem.

[José-Luis]

Well then I don't understand what you are trying to achieve.

[Cedric Wannaz]

Shivam Prasad, the least you can do if you don't need help anymore, is to accept the answer of whoever was nice enough to give you freely part of his/her time.

I accepted the answer from José-Luis (before Jan restored the original question and answered).

The question was originally titled "How to get the smallest difference(Array)" and it had the following picture attached:

[Jan]

I have reverted the question. Please, Shivam Prasad, do not remove the question after somebody has spent the time to provide an answer.

See also: https://www.mathworks.com/matlabcentral/answers/355515-this-function-is-supposed-to-output-smallestposition-1-3-when-given-smallestposition-findsma

Answer 1

[José-Luis]

bla = randi(50,10);
val = 25;

result = abs(bla-val);
result = result == min(result(:));
[xx,yy] = ndgrid(1:size(bla,1),1:size(bla,2));
idx_x = xx(result)
idx_y = yy(result)

Answer 2

[Jan]

The question does not contain the detail, that the input is a matrix, but a scalar and a vector only. Then:

[c, index] = min(abs(Vec - E));

is almost a solution. Do it in two steps:

Dist = abs(Vec - E);

and then use this to determine the indices:

Dist == min(Dist)