conversion of 2d array in to vector

hai matlab users

i have a 2d array double matrix ; i would like to convert it to vector.

2d array to vector.

since dec2bin not working on arrays; i would like to convert the array in to vector. can any one say, how to convert a 2d array into a vector with an example or the command to do that

[PANDIAN` NITHYANANDAM]

thanks sir,

but how to convert 2d double array into a vector.

Answer 1

[Jan]

Several methods:

X = rand(10, 20);
V1 = X(:);
V2 = reshape(X, 1, []);
V3 = reshape(X, numel(X), 1);

Answer 2

[Hanoh Beizer]

That's what I did with my picture:

sz=size(pic);

num=sz(1)*sz(2);

pic_vec=zeros(num);

count=1;

for i=1:sz(1)

for j=1:sz(2)

        pic_vec(count)=pic(i,j);

        count=count+1;

    end 
end

[Jan]

zeros(num) creates a num*num matrix. I assume you mean zeros(num, 1). Anyway, the loopless pic_vec=pic(:) is much faster.

[Anu]

HERE IS THE CODE IN MATLAB TO CONVERT 2D MATRIX TO A VECTOR:

sz=size(pic);

num=sz(1)*sz(2);

pic_vec=zeros(1,num);

for i=1:sz(1)

for j=1:sz(2)

pic_vec(1,(i-1)*sz(2)+j)=pic(i,j)

end

end