How do I replace the elements of a vector with something else based on conditions?

I have a vector A, that is 10 random numbers between 0 and 1. If the number is greater than .5 I want to replace it with 1, otherwise, I want to replace it with zero. I can't figure out how to spit out the modified vector. Help?

Answer 1

[Jan]

x = rand(1,10);
result = (x > 0.5);

The round command would be useful also.

[Stephen23]

vec = rand(1,10);
out = round(vec);

Answer 2

[KSSV]

x = rand(1,10) ;

for i = 1:length(x)

      if x(i) > 0.5 

          x(i) = 1. ;

      else 
          x(i) = 0. ;

      end

end

Please note, the above task can also be carried out without for loop.

Regards

Sreenivas

Answer 3

[Walter Roberson]

http://uk.mathworks.com/matlabcentral/answers/246999-probability-1-2-with-matlab-random-number-generators