sorting sturctured variable

2011 10 4
2 个回答
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0 个投票

hi guys, I need a way to sort the structured variable based on the size of the elements present in those respective structures.
CC=bwconncomp(imstack,26);
stats = regionprops(CC,'pixellist');
statss(8846,1)=0;
for i=1:8846
statss(i,1) = size(stats(i,1).PixelList,1);
end
statss=sort(statss,1);
statss gives the number on which the respective stats should be sorted...What matlab commands can i use to sort structure?

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 采纳的回答

Fangjun Jiang
Fangjun Jiang 2011-10-4

1 个投票

I don't think you can sort structure array directly. However, you can get the size of the field of each structure, then sort to get the index and then re-arrange the structure array using the index, see example:
s=struct('f',{rand(1),rand(3),rand(2)});
b=cellfun('size',{s.f},1);
[c,index]=sort(b);
NewS=s(index);
NewS.f
NewS =
1x3 struct array with fields:
f
ans =
0.9049
ans =
0.2217 0.2967
0.1174 0.3188
ans =
0.9797 0.2581 0.2622
0.4389 0.4087 0.6028
0.1111 0.5949 0.7112

更多回答（1 个）

Walter Roberson
Walter Roberson 2011-10-4

0 个投票

Replace
statss=sort(statss,1);
with
[statss, statidx] = sort(statss,1);
sortedstats = stats(statidx);

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