how to get the index of the same element in a cell

if true
  Qzonenum=unique(cgroup);
for i = 1:length(Qzonenum)
      globidx=find(cgroup==Qzonenum{i});
end
end
then error:Undefined function 'eq' for input arguments of type 'cell'.

Answer 1

[Image Analyst]

Scrap all that and just use ismember() instead.

[Roger]

globidx = find(ismember(cgroup,Qzonenum{i})==1); thanks

[Image Analyst]

You should be able to drop the ==1 part.