Array Keeps creating 0's in my Loop

Question

Gianni Davies 2021-5-10

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/826430-array-keeps-creating-0-s-in-my-loop

评论： Gianni Davies 2021-5-10

The issue I am facing is my array (B) keeps reseting or losing the values that is being saved into it. I believe the issue is within the first three lines where I attempt to convert info(cell) into counter(double array)

B=[];

%I believe the issue lies here will I am getting the information for how

%long i want the loop to be

info=inputdlg('How many variables do you want to create a ratio for (2-5)');

convert1=cell2mat(info);

counter=str2double(convert1);

%I have done tests if I change counter to a number say '3' The B array

%will store information correctly

for p=1:1:counter

list = {'1','2','3','4','5'};

[indx,tf] = listdlg('PromptString',sprintf('Select Variable----->1=Resident , 2=Education , 3=Office , 4 =Toilet, 5=storage')...

,'ListSize',[500,250],'SelectionMode','single','ListString',list);

B(1,counter)=indx;

end

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Answer 1

David Fletcher 2021-5-10

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https://ww2.mathworks.cn/matlabcentral/answers/826430-array-keeps-creating-0-s-in-my-loop#answer_696300

在 MATLAB Online 中打开

Your problem lies in the line

B(1,counter)=indx

counter is the max value of the loop and doesn't change - you should use the loop iterator p instead

B=[];
%I believe the issue lies here will I am getting the information for how
%long i want the loop to be
info=inputdlg('How many variables do you want to create a ratio for (2-5)');
convert1=cell2mat(info);
counter=str2double(convert1);
%I have done tests if I change counter to a number say '3' The B array
%will store information correctly
for p=1:1:counter
    list = {'1','2','3','4','5'};
    [indx,tf] = listdlg('PromptString',sprintf('Select Variable----->1=Resident , 2=Education , 3=Office , 4 =Toilet, 5=storage')...
        ,'ListSize',[500,250],'SelectionMode','single','ListString',list);    
    B(1,p)=indx;   
    
end