conversion of 2d array in to vector
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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
采纳的回答
Several methods:
X = rand(10, 20);
V1 = X(:);
V2 = reshape(X, 1, []);
V3 = reshape(X, numel(X), 1);
更多回答（1 个）
Hanoh Beizer
2014-7-20
编辑：Hanoh Beizer
2014-7-20
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
2 个评论
Jan
2014-8-2
zeros(num) creates a num*num matrix. I assume you mean zeros(num, 1). Anyway, the loopless pic_vec=pic(:) is much faster.
Anu
2014-10-9
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
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