Binary table - counting bits in rows

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Henry Buck
Henry Buck 2015-9-15
编辑： Star Strider 2015-9-15
Hi,
How can I print only the rows that have only two '1' bits in rows? like this one:
0 0 1 1
0 1 0 1
0 1 1 0
1 0 0 1
1 0 1 0
1 1 0 0
Thanks, Henry

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Thorsten
Thorsten 2015-9-15
table= dec2bin(0:(2^4-1)) - '0';
Nones = sum(table, 2);
table(Nones==2, :)
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Image Analyst
Image Analyst 2015-9-15
table is a reserved word for a special data type in MATLAB so I would pick another variable name.
When you said "two '1' bits in rows" and gave this "0 0 1 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 1 0 0" (just a single row), I thought you meant "two 1's in a row", meaning two 1's that were consecutive/adjacent, so that's what my code did.

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更多回答（1 个）

Image Analyst
Image Analyst 2015-9-15
Do you have the Image Processing Toolbox? If so, it's simple to just call regionprops on each row and measure the lengths of all 1 segments. If any of the lengths = 2, then print that row with fprintf(), like this untested code:
for row = 1 : rows
thisRow = m(row, :);
labeledData = bwlabel(thisRow); % Identify each separate segment.
measurements = regionprops(labeledData, 'Area');
allLengths = [measurements.Area];
% See if any of the stretches of 1's are 2 in length
if any(allLengths == 2)
fprintf('%d ', thisRow);
fprintf('\n');
end
end

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