MATLAB: Sorting sturctured variable

sorting structure

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?

Best Answer

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
Related Question