find a values in matrix

 I have matrix    H[  0    2.3926
                   2.3926         0]

I want to find value in matrix H, 2.3926 and store it in a variable A

Answer 1

[Azzi Abdelmalek]

Maybe you are looking for the location

H=[  0    2.3926
     2.3926    0]
[ii,jj]=find(H==2.3926)

Answer 2

[dpb]

val=2.3926;
A=H(abs(H-val)<1.e-5);

NB the "fuzzy" comparison to avoid FP precision problems

[Tomas]

little easier ?

will it work on different numbers in the matrix?

[dpb]

Not sure what the question is, precisely. Of course the comparison can be any value or range of values. There are times when owing to FP rounding find(x==val) won't return what is naively expected.

You can always write

A=H(H==2.3926);

and for some cases you'll find joy, in others "not so much"

Look up "logical addressing" in the documentation for more detail of how this works.