MATLAB: Add column to a matrix

Question

Hello, I wanted to ask about how you might concatenate two vectors or matrices under conditions , ie comparing the elements. For example I have a matrix such that:

a =

         0
    1.0000
    2.0000
    2.4000
    2.5000
    3.0000
    3.5000
    4.8000
    5.0000
    5.5000

and another:

b =

         0 1.0000
    2.4000 2.0000
    4.8000 3.0000

And I want to have such a result that :

result =

         0 1.0000
    1.0000 1.0000
    2.0000 1.0000
    2.4000 2.0000
    2.5000 2.0000
    3.0000 2.0000
    3.5000 2.0000
    4.8000 3.0000
    5.0000 3.0000
    5.5000 3.0000

That is, comparing with the first column of b assign the value 1, 2,3 .. depending on whether the value is greater or is between two numeros.Por example 2.4 is greater and equal to the second element b but less the third and so …. Thanks in advanced.

Answer 1

a =[     0
    1.0000
    2.0000
    2.4000
    2.5000
    3.0000
    3.5000
    4.8000
    5.0000
    5.5000];
b =[      0 1.0000
    2.4000 2.0000
    4.8000 3.0000];
out = [a, b(cumsum(ismember(a,b(:,1))),2)]

or

[~,ii] = histc(a,[b(:,1);inf]);
out = [a, b(ii,2)]