How to delete temporary files in MATLAB?

What does the matlab code ones([3 7 7])denote?

• Hi I'm doing my final year Engineering project in "Matlab" -Automated 3d segmentation of Brain mri. I found that the command "ones([3 7 7]) is the command that mainly controls the seperation of skull from mri. But pls tell me how does it work...why only "3 7 7" and not anything else??pls help... starh = 'Inputs\I0000'; ims = 417:476; endh = '_anon.dcm'; exnames = [starh num2str(ims(5)) endh]; info = dicominfo(exnames); study = [info.PixelSpacing; info.SliceThickness]'; WB = waitbar(0,'Reading DICOM files'); for i=length(ims):-1:1 exnames = [starh num2str(ims(i)) endh]; I(:,:,i) = uint8(dicomread(exnames)); waitbar((length(ims)-i)/length(ims)); end delete(WB) i = 30; slics = squeeze(I(:,:,i)); axes(handles.viewer1) imshow(slics); title('DICOM Input-Cronical Slice'); handles.I=I; handles.study=study; handles.slics=slics; % set(handles.brain_extraction,'Value',I); guidata(hObject, handles); % --- Executes on button press in brain_extraction. function brain_extraction_Callback(hObject, eventdata, handles) % hObject handle to brain_extraction (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) I=handles.I; study=handles.study; slics=handles.slics; I = permute(I,[3 2 1]); study = study([1 3 2]); for i=1:30 I = flipdim(I,i); end I1 = I; I(I<=40) = 0; I(I>=100) = 0; I(:,:,1:80) = 0; blk = ones([3 7 7]); I = imerode (I,blk); Imd = double(max(I(:))); Xo = graythresh(double(slics)/Imd) * Imd; bw = (I>=Xo); L = bwlabeln(bw); stats = regionprops(L,'Area'); A = [stats.Area]; biggest = find(A==max(A)); I(L~=biggest) = 0; I = imdilate(I,blk); slics = imrotate(squeeze(I(30,:,:)),90); axes(handles.viewer2) imshow(slics); title('Extraction');

• Answer:

  It is 3D array of 1s. 3x7 matrices of 1s with 7 planes ans(:,:,1) = 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ans(:,:,2) = 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ans(:,:,3) = 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ans(:,:,4) = 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ans(:,:,5) = 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ans(:,:,6) = 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ans(:,:,7) = 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1