How can the output be written in a new column (without overwriting the previous one)

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Shel 2019-2-11

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https://ww2.mathworks.cn/matlabcentral/answers/444363-how-can-the-output-be-written-in-a-new-column-without-overwriting-the-previous-one

评论： M 2019-2-12

I am processing several images and use loop for the series. I need to write the output of each loop in a new line beside the previous column.

for example: for the first loop I want data in column 2, for the second loop I want data in column 3 beside column 2

would you help me please?

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M 2019-2-11

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/444363-how-can-the-output-be-written-in-a-new-column-without-overwriting-the-previous-one#answer_360528

编辑：M 2019-2-11

在 MATLAB Online 中打开

You can use cell for that. You can try and adapt the following example:

a=cell(3,1);
for i=1:3
    a{i}=ones(i,1);
end
a =
  3×1 cell array
    {[       1]}
    {2×1 double}
    {3×1 double}

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Shel 2019-2-11

在 MATLAB Online 中打开

here is my code of the loop:

for thresh=240:300
    fprintf(file1, '%10s %2.5f    \r\n', 'Threshold', thresh);
	for i=1:totalfile
		fname=['8--7-',num2str(i), '.dcm'];
		indicom=dicomread(fullfile(source_dir, fname));
		T=thresh;
		indicom(find(indicom<T))=0;
		img_NB=length(indicom(indicom==0));
           fprintf(file1,' %2.0f  %10s %2.5f    \r\n', i,  '   ', img_NB);
        end
   end 
fclose(file1);