Beginner Check-box help

Question

Melvin 2013-6-24

0
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https://ww2.mathworks.cn/matlabcentral/answers/80071-beginner-check-box-help

Good morning everyone,

I am working on a GUI that displays data opened from a folder. All of the .txt files within that folder are imported and the data is extracted from it. That part I managed to complete, but I need now to extract specific parts of these .txt files and display them in a table w/ check boxes, i.e. Pixel Size. I used the 'strmatch' function (Matlab v. R2010b) to locate the line that starts with 'Pixel size', but when I check the box, it only displays the data from the first .txt file found. How can I get it to display all of the data? I also don't know how to program the unchecking part of the callback. I want the unselected data to disappear from the table.

 for i = 1:l
    PSize = strmatch('Pixel size',S{i}{1});
    i=i+1;
end    
if(get(hObject,'Value') == get(hObject,'Max'))
   for i = 1:l
       set(uitable1,'Data',{S{i}{1}{PSize(1)}});
       i=i+1;
   end
else
    %Unchecking the checkbox clears the Pixel Size data
end

Thank you in advance

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Answer 1

Jan 2013-6-24

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https://ww2.mathworks.cn/matlabcentral/answers/80071-beginner-check-box-help#answer_89822

编辑：Jan 2013-6-24

在 MATLAB Online 中打开

You cannot modify the loop counter of FOR loops in Matlab:

for i = 1:5
  disp(i)
  i = i + 1;
end

This shows the number from 1 to 5, and the increasing of i insider the loop has no effect. I do not know if this addresses your problem, but it is at least another problem.

What is the value of "l"?

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Melvin 2013-6-25

I realized this, and I removed that line from my code. I also figured out how to add data to a table, but I encountered a new problem. When I added a second check-box, let's call this one 'Lower Grey Threshold', when one check-box is checked, and the second check-box is checked, it replaces the first data. How to I program the check-boxes to add data to the table instead of replace the data already there? Thanks

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