why i cant load data one-by-one into row/column in mat.file

why i cant load data one-by-one into row/column in mat.file after sum it in the coding. for example, i run 4 data and i need 4 data to be load in mat.file after sum it one-by-one, but they sum all 4 data together.

%

objMeasurements = regionprops(labeledImage,BW, 'all');
objMeasurements3 = regionprops(labeledImage3, BW, 'all');
objMeasurements2 = regionprops(labeledImage2, BW, 'all');
objMeasurements4 = regionprops(labeledImage4, BW, 'all');
objMeasurementsn = regionprops(labeledImagen, BW, 'all');
numberOfobj = size(objMeasurements, 1);
hold on;
boundaries = bwboundaries(image_dilate);
numberOfBoundaries = size(boundaries);
for k = 1 : numberOfBoundaries
    thisBoundary = boundaries{k};
    plot(thisBoundary(:,2), thisBoundary(:,1), 'g', 'LineWidth', 2);
end
hold off;

fontSize = 10;  % Used to control size of "obj number" labels put atop the image.
labelShiftX = -7;   % Used to align the labels in the centers of the coins.
objECD = zeros(1, numberOfobj);

fprintf(1,'Obj #       Area   Perimeter    \n');

for k = 1 : numberOfobj           % Loop through all blobs.
    % Find the mean of each blob.  (R2008a has a better way where you can pass the original image
    % directly into regionprops.  The way below works for all versions including earlier versions.)
    thisobjPixels = objMeasurements(k).PixelIdxList;  % Get list of pixels in current blob.
    meanGL = mean(BW(thisobjPixels)); % Find mean intensity (in original image!)
    meanGL2008a = objMeasurements(k).MeanIntensity; % Mean again, but only for version >= R2008a

   objArea = objMeasurements(k).Area;      % Get area.
   area1=[objArea;area1];
   sumarea=sum(area1)

objPerimeter = objMeasurements(k).Perimeter;        % Get perimeter.
perimeter1=[objPerimeter;perimeter1];
sumperi=sum(perimeter1)

area_perimeter(i,:)= [sumarea,sumperi];
save('perimeter.mat','area_perimeter');

[Jan]

I do not understand the question. What is the relevant part of the code? Do you mean "*save* to a .mat file" or "*load* from a .mat file"?

[hudazin]

sorry. i mean, save to mat.file.