MATLAB: Como incrementar un vector cada n filas

for loopif statement

Hola,
Tengo este script
x = zeros(10,1);
a = 1;
for k = 1:2:21;
    if mod(a,4)==0;
        x(a)= k+4;
    else
        x(a)= k+2;
    end
    a=a+1;
end
y obtengo esto:
     3
     5
     7
    11
    11
    13
    15
    19
    19
    21
    23
y yo quiero obtener
3 
5
7
11
13
15
19
21
23
es decir, sin que se me repita el 11 y 19.
Gracias

Best Answer

Isabel - why 
 if mod(a,4)==0;  % <----- a
instead of 
if mod(k,4)==0;   % <----- k
? And so your code would be
x = zeros(11,1);        % <------ 11
a = 1;
for k = 1:2:21;
    if mod(k,4)==0;     % <------ k
        x(a)= k+4;
    else
        x(a)= k+2;
    end
    a=a+1;
end
with result
     3
     5
     7
     9   % <----- 9
    11
    13
    15
    17   % <------ 17
    19
    21
    23
Note that k = 1:2:21 means that k is always odd: k = 1, 3,5,7,9,11,13,15,17,19,21 and so the condition mod(k,4)==0; will NEVER be true. Is this what you expect?
Related Question