how to creat this vector?

1 view (last 30 days)
benghenia aek
benghenia aek on 30 Jan 2019
Edited: Stephen23 on 30 Jan 2019
hello everyone;
i have vector
X=[1 1 0 1 1 1 0 0 0 1 1 1 1 1 0 0 1 0 0 0 1 1 1 1 0]
c= size number of 1 from the vector X
c=[2 3 5 1 4]
h=mean(c)
h=3;
if c>h
c=c;
elseif c<=h
c=0;
end
Y=[0 0 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 0]
how to creat vector Y?

Accepted Answer

Rik
Rik on 30 Jan 2019
I'm going to guess you mean this instead, and wanted to create Y from X accordingly.
X=[1 1 0 1 1 1 0 0 0 1 1 1 1 1 0 0 1 0 0 0 1 1 1 1 0];
c=[2 3 5 1 4];
h=mean(c);
for k=1:numel(c)
if c(k)>h
c(k)=c(k);
elseif c(k)<=h
c(k)=0;
end
end
This can be solved with the code below.
X=[1 1 0 1 1 1 0 0 0 1 1 1 1 1 0 0 1 0 0 0 1 1 1 1 0];
encoded=bwlabel(X);
c=histc(encoded,1:max(encoded));
ind=find(c<=mean(c));
Y=X;
Y(ismember(encoded,ind))=0;
Y_check=[0 0 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 0];
isequal(Y,Y_check)
%isequal might return false for floats, if so, check if this is small:
%max(abs(Y-Y_check))

More Answers (1)

Stephen23
Stephen23 on 30 Jan 2019
Edited: Stephen23 on 30 Jan 2019
Exactly like in my answer to your earlier question:
X=[1 1 0 1 1 1 0 0 0 1 1 1 1 1 0 0 1 0 0 0 1 1 1 1 0]
Y = X;
D = diff([0,X,0]);
B = find(D>0);
E = find(D<0)-1;
N = 3;
for k = 1:numel(B)
if (E(k)-B(k))<N
Y(B(k):E(k)) = 0;
end
end
Y
Giving:
X =
1 1 0 1 1 1 0 0 0 1 1 1 1 1 0 0 1 0 0 0 1 1 1 1 0
Y =
0 0 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 0

Categories

Find more on Software Development Tools in Help Center and File Exchange

Tags

No tags entered yet.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!