Replace numbers by strings

Hi,

I have a matrix A= 1x100, and now I want to replace if numbers in A < 90 by 'case1' and A>=90 by 'case 2'

Could anyone offer some help?

Thanks

[per isakson]

Strings, e.g. 'case1', cannot be stored in a numerical matrix.

[Stephen23]

htran's "Answer" moved here:

I mean probably I have to create a matrix B 1x100 which contains strings: 'case1' and 'case 2'. For example:

A  B
10 case 1
100 case 2
40 case 1
.. so on

But I don't know how to a new matrix B according to numbers in matrix B.

More help please

Answer 1

[per isakson]

One way:

A = randi([80,100], 1,100 ); % Sample data
C = cell(size(A));
C(A<90)={'case1'};
C(A>=90)={'case2'};

result

>> C(1:5)
ans = 
    'case1'    'case2'    'case2'    'case2'    'case1'

[Jos (10584)]

Great and simple answer by Per. A minor suggestion:

    A = [80 90 100] % data
    C = repmat({'case1'}, size(A))
    C(A>=90) = {'case2'}

Answer 2

[Jan]

Or:

Pool = {'case1', 'case2'};
B    = Pool((A < 90) + 1)

Or:

B = sprintfc('case%d', (A < 90) + 1)