Insert a string section on the numbers in a vector

A = [ 2 7 9 13];

add text CH_ on each value in the vector A

output

B = [CH_2 CH_7 CH_9 CH_13]

Answer 1

[Bhaskar R]

res = arrayfun(@(x)strcat('CH_', num2str(x)), A, 'UniformOutput', false);
res{1}, res{2} % to get each element 

[HERBERT NYAKOOJO]

Kudos

[Stephen23]

More efficient with sprintf:

fun = @(x)sprintf('CH_%u',x);
res = arrayfun(fun, A, 'UniformOutput', false);

[HERBERT NYAKOOJO]

Perfect man

Thank you

Answer 2

[HERBERT NYAKOOJO]

A = [ 2 7 9 13];

str = sprintf('CH_%d ',A);

CH_2 CH_7 CH_9 CH_13