Thread Subject: Filtering

If I have a vector named x:

x=[20 15 10 5 0.5 0.2 0.1 0 -0.1 -0.3 -0.5 -1 -3 -5]

What I am interested in is to filter the data in the vector. I want 0.5>x>-0.5 set to zero. This means the vector x after filtering should look like:


x=[20 15 10 5 0 0 0 0 0 0 0 -1 -3 -5]

I tried

x(x<=0.5 && x>=-0.5)=0

??? Operands to the || and && operators must be convertible to logical scalar values.


x(x<=0.5)=0 && x(x>=-0.5)=0

Error: The expression to the left of the equals sign is not a valid target for an assignment.

On 1 Aug, 09:47, "Jesper Lauridsen" <jesperhols...@hotmail.com> wrote:
> If I have a vector named x:
>
> x=[20 15 10 5 0.5 0.2 0.1 0 -0.1 -0.3 -0.5 -1 -3 -5]
>
> What I am interested in is to filter the data in the vector. I want 0.5>x>-0.5 set to zero. This means the vector x after filtering should look like:
>
> x=[20 15 10 5 0 0 0 0 0 0 0 -1 -3 -5]
>
> I tried
>
> x(x<=0.5 && x>=-0.5)=0
>
> ??? Operands to the || and && operators must be convertible to logical scalar values.
>
> x(x<=0.5)=0 && x(x>=-0.5)=0
>
> Error: The expression to the left of the equals sign is not a valid target for an assignment.

>> x=[20 15 10 5 0.5 0.2 0.1 0 -0.1 -0.3 -0.5 -1 -3 -5]';
>> x(abs(x)<=0.5)=0

x =

    20
    15
    10
     5
     0
     0
     0
     0
     0
     0
     0
    -1
    -3
    -5

Rune

Hi, colleague!
Try this:

clear;
x=[20 15 10 5 0.5 0.2 0.1 0 -0.1 -0.3 -0.5 -1 -3 -5];
 for ii=1:length(x)
     if x(ii)<=0.5 && x(ii)>=-0.5
         x(ii)=0;
     end
 end

Best regards, Me.