Vector problem

I have a (3,51)-sized vector, I would like to remove all data (set to zero) that does not belong to a certain interval,

x1 < x < x2

How can I do this efficiently?

Many thanks!

Answer 1

[Fangjun Jiang]

A=rand(3,51);
Index=and(A<0.8,A>0.5);
A(Index)=0;

[Lizan]

Thanks you, it worked!

Just one question, what does command 'and()' specifically do?

[Fangjun Jiang]

It is the function format of doing logical and operation, such as x & y, you can do and(x,y)

[Sean de Wolski]

elements of A that are less than 0.8 AND those same elements of A greater than 0.5.

[Jan]

@Susan: You could read the documentation "doc and" also. Do we assist to solve your homework?