MATLAB: How to create this vector

i have two vectors X and Y:

X=[0 0 0 1 1 1 1 0 0 1 1 0 0 0 1 1 1 1]

Y=[3 6 5]

i want to creat vector Z

Z=[0 0 0 3 3 3 3 0 0 6 6 0 0 0 5 5 5 5]

Best Answer

X=[0 0 0 1 1 1 1 0 0 1 1 0 0 0 1 1 1 1];
Y=[3 6 5];
Y2 = [0,Y];
out = Y2(bwlabel(X) + 1);

Related Solutions

MATLAB: How can one create this matrix, part 3

 [X, Y, Z] = ndgrid( 1:.1:1.5., 0:.1:0.5,  0:.1:0.5);
 [Z(:), Y(:), X(:)]

MATLAB: How to creat this vector

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))

Best Answer

Related Solutions

MATLAB: How can one create this matrix, part 3

MATLAB: How to creat this vector

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