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i have a large matrix whose elements is 1 and 0; how to conver each row to decimal ,like bin2dec

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Roger
Roger 2014-9-15
评论： Roger 2014-9-15
i do it like this
if true
rownum = size(Qbinnum,1);
for i = 1:rownum
cgroup(i)=bin2dec(num2str(Qbinnum(i,:)));
end
end
as the matrix is big, so it takes a lot of seconds ,any way easier ,less time ways?

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采纳的回答

Rick Rosson
Rick Rosson 2014-9-15
N = size(Qbinnum,2);
k = ((N-1):-1:0)';
v = 2.^k;
cgroup = Qbinnum*v;

更多回答（1 个）

Image Analyst
Image Analyst 2014-9-15
What does this say
whos Qbinnum

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