WHY EVERY TIME I AM GETTING THE ERROR "Cell contents assignment to a non-cell array object." I need to store the value of "ISG" which is a one dimensional array(array elements changes for every i,j) into every cell of "VarIsg" .. PLEASE HELP ME OUT

for i=1:3
    for j=1:3

          mat_cor= InsideSquareCoordinate2{i,j};
          mat_data=InsideSquareGrade2{i,j};
          mat_data=mat_data(mat_data~=0);
          mat_dl=length(mat_data);
          %%%%%%%%%%%****-----------------------------------------------------------------------------------------****%
          % mat_data(:,n1)
          %        n1=1;
          %        if  ~isempty (InsideSquareCoordinate2{i,j})
          VarIsg=0;
          tempPointCord=InsideSquareCoordinate2{i,j};
          xCordInside=tempPointCord(:,1);
          yCordInside=tempPointCord(:,2);
          for i1=1:mat_dl
              for j1=1:mat_dl
                  if (i1~=j1)
                      d=sqrt((xCordInside(i1)-xCordInside(j1))^2 + (yCordInside(i1)-yCordInside(j1))^2);
                      if((xCordInside(j1)-yCordInside(i1))==0)
                          theta=90;
                      else
                          theta=180.*atan((yCordInside(j1)-yCordInside(i1))./(xCordInside(j1)-yCordInside(i1)))./pi;
                      end
                      minlag=10; nlag=3; laginv=10; clear('ISG')
                      for k=1:nlag

                          llag(k)=minlag+(k-1)*laginv;
                          hlag(k)=llag(k)+laginv;
                          b=abs(d.*sin(theta-azm));
                          if((llag(k)<=d && d<hlag(k))&&(lowangle<=theta &&theta<upangle)&&(b<=maxbandw))

                              ISG(k)= sum((mat_data(i1)- mat_data(j1)).^2)/(2*mat_dl);

                          end

                      end
                      ISG
                 VarIsg{i,j}=ISG         
                  end

              end
          end
  %                 ISG
  %                 VarIsg{i,j}=0;

      end
  end

Answer 1

[Walter Roberson]

You have

            VarIsg=0;

so VarIsg is numeric.

Later you do

VarIsg{i,j}=ISG

which attempts to access VarIsg as if it is a cell array. But it is not a cell array, it is numeric.

Your line

VarIsg=0;

should probably be

VarIsg{i,j} = 0;

[Image Analyst]

or

VarISG = cell(mat_dl, mat_dl);

[Walter Roberson]

It would probably be a good idea to put

VarIsg = cell(mat_dl, mat_dl);

before the loop, while still maintaining the

VarIsg{i,j} = 0;

within the loop.

Answer 2

[RAJ DATTA]

thank u all for your valuable replies...it works..