putting the answer in a matrices
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I have matrix a. Then, I find which column in each row has number bigger than 1. The code is as below
a =
5 0 0 0 0 0 0 0 0 0
3 1 0 0 0 0 0 0 0 0
1 2 0 0 0 0 0 0 0 0
1 0 1 0 0 0 0 0 0 0
>> for cpart=1:size(a,1)
b=a(cpart,:);
row = find(b ~=0)
end
row =
1
row =
1 2
row =
1 2
row =
1 3
How can I put the row in a matrices ?(as shown below)
row = [1 0
1 2
1 2
1 3]
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Image Analyst
2019년 2월 25일
What are you going to do if you have row? Because I'm thinking you don't even need it and whatever you're going to do can be done much easier with a mask
mask = a~=0; % Create a logical 2-D matrix.
So I don't want to tell you how to get row if it just makes things more complicated for what you eventually want to do. So, what will you do with row if you had it?
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madhan ravi
2019년 2월 25일
b=arrayfun(@(x)find(a(x,:)),1:size(a,1),'un',0);
M=max(cellfun('prodofsize',b));
C=cellfun(@(x)[x zeros(1,M-numel(x))],b,'un',0);
Result=vertcat(C{:})
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madhan ravi
2019년 2월 25일
To remove rows with all zeros:
Result(sum(Result,2)~=0,:)
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