CODEWITHSUNDEEP
matlab
Hisham Alghamdi
Hisham Alghamdi

Reputation: 179

copy data with reducing the code lines

counter=1;
for i=1:50,
    if y(i)<U && y(i)>L
        Y(counter)=[y(i)];               % To copy the data from materix y to Y
        counter=counter+1;
    end
end

My question is:

Is there any way to reduce the lines of the code and use something instead of "counter" doing the same idea?

Note: U and L are numbers.

Upvotes: 1

Views: 51

Answers (1)

kkuilla
kkuilla

Reputation: 2256

Use logical indexing instead.

U=50;
L =  1;

Create some random values. I multiply it with 100 to get a larger range.

A=rand(1,10).*100
A =

Columns 1 through 9:

92.3313   32.6929   33.4143   21.4837   71.6719   30.4625    7.5700   57.0943    6.4849

Column 10:

28.0583

Apply logical indexing

B=A(A<U & A>L)
B =

32.6929   33.4143   21.4837   30.4625    7.5700    6.4849   28.0583

Then you can use find and ismember to find the index if you want.

find(ismember(A,B)==1)

ans =

    2    3    4    6    7    9   10

Upvotes: 3

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